No bug: [taskgraph] Remove unused code for varying build-tools repo to use; r=aki

We don't actually use the build-tools repo in-tree anymore, so remove the
support code for it.

Differential Revision: https://phabricator.services.mozilla.com/D25631

--HG--
extra : moz-landing-system : lando

taskcluster/taskgraph/transforms/final_verify.py

@@ -8,7 +8,6 @@ Transform the beetmover task into an actual task description.
 from __future__ import absolute_import, print_function, unicode_literals
 
 from taskgraph.transforms.base import TransformSequence
-from taskgraph.util.schema import resolve_keyed_by
 
 transforms = TransformSequence()
 
@@ -34,7 +33,4 @@ def add_command(config, tasks):
             },
             'sparse-profile': 'update-verify',
         }
-        for thing in ("BUILD_TOOLS_REPO",):
-            thing = "worker.env.{}".format(thing)
-            resolve_keyed_by(task, thing, thing, **config.params)
         yield task

taskcluster/taskgraph/transforms/update_verify.py

@@ -40,7 +40,7 @@ def add_command(config, tasks):
                            ),
                 'sparse-profile': 'update-verify',
             }
-            for thing in ("CHANNEL", "VERIFY_CONFIG", "BUILD_TOOLS_REPO"):
+            for thing in ("CHANNEL", "VERIFY_CONFIG"):
                 thing = "worker.env.{}".format(thing)
                 resolve_keyed_by(
                     chunked, thing, thing,