Revert "gclient: Add commands to edit dependencies and variables in DEPS"

This reverts commit 7f4c905fc53e7cbcc3277074c6a339ade8bc0f66.

Reason for revert:
When running "gclient sync" on a V8 checkout, it says:

  File "/work/chrome/depot_tools/gclient.py", line 995, in run
   self.ParseDepsFile()
 File "/work/chrome/depot_tools/gclient.py", line 874, in ParseDepsFile
   self._postprocess_deps(deps, rel_prefix), use_relative_paths)
 File "/work/chrome/depot_tools/gclient.py", line 660, in _postprocess_deps
   dval['condition'], self.condition)
TypeError: '_NodeDict' object does not support item assignment

on the recursive descent into third_party/android_tools/DEPS. Any chance that's related to https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/950405 ?

Original change's description:
> gclient: Add commands to edit dependencies and variables in DEPS
> 
> Adds 'gclient setvar' and 'gclient setdep' commands to edit variables
> and dependencies in a DEPS file.
> 
> Bug: 760633
> Change-Id: I6c0712cc079dbbbaee6541b7eda71f4b4813b77b
> Reviewed-on: https://chromium-review.googlesource.com/950405
> Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
> Reviewed-by: Aaron Gable <agable@chromium.org>

TBR=agable@chromium.org,ehmaldonado@chromium.org

Change-Id: If58f6b15d31b19fc53294f1e41d26b4e684a2cf9
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 760633
Reviewed-on: https://chromium-review.googlesource.com/969165
Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
diff --git a/gclient.py b/gclient.py
index 4c02db4..21eeeb5 100755
--- a/gclient.py
+++ b/gclient.py
@@ -804,7 +804,7 @@
     self._gn_args_file = local_scope.get('gclient_gn_args_file')
     self._gn_args = local_scope.get('gclient_gn_args', [])
 
-    self._vars = dict(local_scope.get('vars', {}))
+    self._vars = local_scope.get('vars', {})
     if self.parent:
       for key, value in self.parent.get_vars().iteritems():
         if key in self._vars:
@@ -2822,62 +2822,6 @@
   return 0
 
 
-def CMDsetdep(parser, args):
-  parser.add_option('--var', action='append',
-                    dest='vars', metavar='VAR=VAL', default=[],
-                    help='Sets a variable to the given value with the format '
-                         'name=value.')
-  parser.add_option('-r', '--revision', action='append',
-                    dest='revisions', metavar='DEP@REV', default=[],
-                    help='Sets the revision/version for the dependency with '
-                         'the format dep@rev. If it is a git dependency, dep '
-                         'must be a path and rev must be a git hash or '
-                         'reference (e.g. src/dep@deadbeef). If it is a CIPD '
-                         'dependency, dep must be of the form path:package and '
-                         'rev must be the package version '
-                         '(e.g. src/pkg:chromium/pkg@2.1-cr0).')
-  parser.add_option('--deps-file', default='DEPS',
-                    # TODO(ehmaldonado): Try to find the DEPS file pointed by
-                    # .gclient first.
-                    help='The DEPS file to be edited. Defaults to the DEPS '
-                         'file in the current directory.')
-  (options, args) = parser.parse_args(args)
-
-  global_scope = {'Var': lambda var: '{%s}' % var}
-
-  if not os.path.isfile(options.deps_file):
-    raise gclient_utils.Error(
-        'DEPS file %s does not exist.' % options.deps_file)
-  with open(options.deps_file) as f:
-    contents = f.read()
-  local_scope = gclient_eval.Exec(contents, global_scope, {})
-
-  for var in options.vars:
-    name, _, value = var.partition('=')
-    if not name or not value:
-      raise gclient_utils.Error(
-          'Wrong var format: %s should be of the form name=value.' % var)
-    gclient_eval.SetVar(local_scope, name, value)
-
-  for revision in options.revisions:
-    name, _, value = revision.partition('@')
-    if not name or not value:
-      raise gclient_utils.Error(
-          'Wrong dep format: %s should be of the form dep@rev.' % revision)
-    if ':' in name:
-      name, _, package = name.partition(':')
-      if not name or not package:
-        raise gclient_utils.Error(
-            'Wrong CIPD format: %s:%s should be of the form path:pkg@version.'
-            % (name, package))
-      gclient_eval.SetCIPD(local_scope, name, package, value)
-    else:
-      gclient_eval.SetRevision(local_scope, global_scope, name, value)
-
-  with open(options.deps_file) as f:
-    f.write(gclient_eval.RenderDEPSFile(local_scope))
-
-
 def CMDverify(parser, args):
   """Verifies the DEPS file deps are only from allowed_hosts."""
   (options, args) = parser.parse_args(args)