Bug 1187706 part 2: Cleanup mozharness stuff. r=garndt

Now that mozharness is in tree, we don't need references to mozharness
repositories and revisions.

We don't cleanup all mozharness stuff because android and desktop builds
still references external mozharness.

testing/taskcluster/mach_commands.py

@@ -450,10 +450,6 @@ class CIBuild(object):
     @CommandArgument('--head-rev',
         required=True,
         help='Commit revision to use')
-    @CommandArgument('--mozharness-repository',
-        help='URL for custom mozharness repo')
-    @CommandArgument('--mozharness-rev',
-        help='Commit revision to use from mozharness repository')
     @CommandArgument('--owner',
         default='foobar@mozilla.com',
         help='email address of who owns this graph')
@@ -475,16 +471,6 @@ class CIBuild(object):
 
         head_ref = params['head_ref'] or head_rev
 
-        mozharness = load_mozharness_info()
-
-        mozharness_repo = params['mozharness_repository']
-        if mozharness_repo is None:
-            mozharness_repo = mozharness['repo']
-
-        mozharness_rev = params['mozharness_rev']
-        if mozharness_rev is None:
-            mozharness_rev = mozharness['revision']
-
         from taskcluster_graph.from_now import (
             json_time_from_now,
             current_json_time,
@@ -498,9 +484,6 @@ class CIBuild(object):
             'head_repository': head_repository,
             'head_rev': head_rev,
             'head_ref': head_ref,
-            'mozharness_repository': mozharness_repo,
-            'mozharness_ref': mozharness_rev,
-            'mozharness_rev': mozharness_rev
         }.items())
 
         try:

testing/taskcluster/tasks/phone_build.yml

@@ -54,9 +54,6 @@ task:
       GECKO_HEAD_REPOSITORY: '{{head_repository}}'
       GECKO_HEAD_REV: '{{head_rev}}'
       GECKO_HEAD_REF: '{{head_ref}}'
-      MOZHARNESS_REPOSITORY: '{{mozharness_repository}}'
-      MOZHARNESS_REV: '{{mozharness_rev}}'
-      MOZHARNESS_REF: '{{mozharness_ref}}'
 
   extra:
     index: