--- a/taskcluster/ci/toolchain/linux.yml
+++ b/taskcluster/ci/toolchain/linux.yml
@@ -258,17 +258,16 @@ linux64-android-sdk-linux-repack:
         max-run-time: 36000
         artifacts:
           - name: project/gecko/android-sdk
             path: /builds/worker/project/gecko/android-sdk/
             type: directory
     run:
         using: toolchain-script
         script: repack-android-sdk-linux.sh
-        tc-vcs: false
         resources:
             - 'python/mozboot/**/*android*'
         toolchain-artifact: project/gecko/android-sdk/android-sdk-linux.tar.xz
         toolchain-alias: android-sdk-linux
 
 linux64-android-gradle-dependencies:
     description: "Android Gradle dependencies toolchain task"
     treeherder:
@@ -281,18 +280,16 @@ linux64-android-gradle-dependencies:
         docker-image: {in-tree: android-build}
         env:
             GRADLE_USER_HOME: "/builds/worker/workspace/build/src/mobile/android/gradle/dotgradle-online"
         max-run-time: 36000
     run:
         using: toolchain-script
         script: android-gradle-dependencies.sh
         sparse-profile: null
-
-        tc-vcs: false
         resources:
             - 'taskcluster/scripts/misc/tooltool-download.sh'
             - 'taskcluster/scripts/misc/android-gradle-dependencies/**'
             - '**/*.gradle'
             - 'mobile/android/config/mozconfigs/android-api-16-gradle-dependencies/**'
             - 'mobile/android/config/mozconfigs/common*'
         toolchain-artifact: public/build/android-gradle-dependencies.tar.xz
         toolchain-alias: android-gradle-dependencies

--- a/taskcluster/docs/caches.rst
+++ b/taskcluster/docs/caches.rst
@@ -71,20 +71,16 @@ Version Control Caches
    backwards-incompatible changes to the cache's behavior.
 
    The ``hg-store`` contains a `shared store <https://www.mercurial-scm.org/wiki/ShareExtension>`
    that is is used by ``hg robustcheckout``. If you are using ``run-task`` you
    should set the ``HG_STORE_PATH`` environment variable to point to this
    directory. If you are using ``hg robustcheckout``, pass this directory to the
    ``--sharebase`` option.
 
-``level-{{level}}-{{project}}-tc-vcs`` (deprecated)
-    This cache is used internally by ``tc-vcs``.  This tool is deprecated and
-    should be replaced with ``hg robustcheckout``.
-
 Workspace Caches
 ::::::::::::::::
 
 ``level-{{level}}-*-workspace``
    These caches (of various names typically ending with ``workspace``)
    contain state to be shared between task invocations. Use cases are
    dependent on the task.
 

--- a/taskcluster/taskgraph/transforms/job/common.py
+++ b/taskcluster/taskgraph/transforms/job/common.py
@@ -30,25 +30,16 @@ def docker_worker_add_workspace_cache(co
         'skip-untrusted': True,
     })
     if extra:
         taskdesc['worker']['caches'][-1]['name'] += '-{}'.format(
             extra
         )
 
 
-def docker_worker_add_tc_vcs_cache(config, job, taskdesc):
-    taskdesc['worker'].setdefault('caches', []).append({
-        'type': 'persistent',
-        'name': 'level-{}-{}-tc-vcs'.format(
-            config.params['level'], config.params['project']),
-        'mount-point': "/builds/worker/.tc-vcs",
-    })
-
-
 def add_public_artifacts(config, job, taskdesc, path):
     taskdesc['worker'].setdefault('artifacts', []).append({
         'name': 'public/build',
         'path': path,
         'type': 'directory',
     })
 
 

--- a/taskcluster/taskgraph/transforms/job/toolchain.py
+++ b/taskcluster/taskgraph/transforms/job/toolchain.py
@@ -11,17 +11,16 @@ import hashlib
 
 from mozbuild.shellutil import quote as shell_quote
 
 from taskgraph.util.schema import Schema
 from voluptuous import Optional, Required, Any
 
 from taskgraph.transforms.job import run_job_using
 from taskgraph.transforms.job.common import (
-    docker_worker_add_tc_vcs_cache,
     docker_worker_add_gecko_vcs_env_vars,
     docker_worker_add_public_artifacts,
     docker_worker_add_tooltool,
     support_vcs_checkout,
 )
 from taskgraph.util.hash import hash_paths
 from taskgraph import GECKO
 
@@ -42,19 +41,16 @@ toolchain_run_schema = Schema({
     # If not false, tooltool downloads will be enabled via relengAPIProxy
     # for either just public files, or all files.  Not supported on Windows
     Required('tooltool-downloads', default=False): Any(
         False,
         'public',
         'internal',
     ),
 
-    # If true, tc-vcs will be enabled.  Not supported on Windows.
-    Required('tc-vcs', default=True): bool,
-
     # Sparse profile to give to checkout using `run-task`.  If given,
     # a filename in `build/sparse-profiles`.  Defaults to
     # "toolchain-build", i.e., to
     # `build/sparse-profiles/toolchain-build`.  If `None`, instructs
     # `run-task` to not use a sparse profile at all.
     Required('sparse-profile', default='toolchain-build'): Any(basestring, None),
 
     # Paths/patterns pointing to files that influence the outcome of a
@@ -125,18 +121,16 @@ def docker_worker_toolchain(config, job,
     worker['chain-of-trust'] = True
 
     # Allow the job to specify where artifacts come from, but add
     # public/build if it's not there already.
     artifacts = worker.setdefault('artifacts', [])
     if not any(artifact.get('name') == 'public/build' for artifact in artifacts):
         docker_worker_add_public_artifacts(config, job, taskdesc)
 
-    if run['tc-vcs']:
-        docker_worker_add_tc_vcs_cache(config, job, taskdesc)
     docker_worker_add_gecko_vcs_env_vars(config, job, taskdesc)
     support_vcs_checkout(config, job, taskdesc, sparse=True)
 
     env = worker['env']
     env.update({
         'MOZ_BUILD_DATE': config.params['moz_build_date'],
         'MOZ_SCM_LEVEL': config.params['level'],
         'TOOLS_DISABLE': 'true',

--- a/taskcluster/taskgraph/transforms/marionette_harness.py
+++ b/taskcluster/taskgraph/transforms/marionette_harness.py
@@ -22,16 +22,9 @@ def setup_task(config, tasks):
             'GECKO_BASE_REPOSITORY': config.params['base_repository'],
             'GECKO_HEAD_REF': config.params['head_rev'],
             'GECKO_HEAD_REPOSITORY': config.params['head_repository'],
             'GECKO_HEAD_REV': config.params['head_rev'],
             'MOZ_BUILD_DATE': config.params['moz_build_date'],
             'MOZ_SCM_LEVEL': config.params['level'],
         })
 
-        task['worker']['caches'] = [{
-            'type': 'persistent',
-            'name': 'level-{}-{}-tc-vcs'.format(
-                config.params['level'], config.params['project']),
-            'mount-point': "/builds/worker/.tc-vcs",
-        }]
-
         yield task