Revert "[ios] Add --landmines-path to build/landmines.py script"

This reverts commit aafd725a.

Reason for revert: Breaks downstream checkout.

Original change's description:
> [ios] Add --landmines-path to build/landmines.py script
> 
> Chrome on iOS has some internal landmines and uses a forked version
> of build/landmines.py for that to allow using a separate landmines
> file.
> 
> Add a --landmines-path parameter to build/landmines.py script in
> order to remove the forked version and instead use the shared one.
> 
> Bug: 1033067
> Change-Id: Iac668c5877ae181442078cda7ce8e727f91104b4
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2283582
> Reviewed-by: Dirk Pranke <dpranke@google.com>
> Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#786218}

TBR=dpranke@google.com,sdefresne@chromium.org

Change-Id: Ic3e9ba6b7b56c4d4fb0ae28a158897d1a593b972
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1033067
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2287302Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#786249}

DEPS

@@ -4094,23 +4094,6 @@ hooks = [
         'src/build/landmines.py',
     ],
   },
-  {
-    # This clobbers when necessary (based on get_landmines.py). It must be the
-    # first hook so that other things that get/generate into the output
-    # directory will not subsequently be clobbered. This script is only run
-    # for iOS build with src_internal.
-    'name': 'landmines_ios_internal',
-    'pattern': '.',
-    'condition': 'checkout_ios and checkout_src_internal',
-    'action': [
-        'python',
-        'src/build/landmines.py',
-        '--landmines-scripts',
-        'ios_internal/build/get_landmines.py',
-        '--landmines-path',
-        'ios_internal/.landmines',
-    ],
-  },
   {
     # Ensure that the DEPS'd "depot_tools" has its self-update capability
     # disabled.

build/landmines.py

@@ -55,9 +55,10 @@ def get_build_dir(src_dir):
   return os.path.abspath(os.path.join(src_dir, output_dir))
 
 
-def clobber_if_necessary(new_landmines, src_dir, landmines_path):
+def clobber_if_necessary(new_landmines, src_dir):
   """Does the work of setting, planting, and triggering landmines."""
   out_dir = get_build_dir(src_dir)
+  landmines_path = os.path.normpath(os.path.join(src_dir, '.landmines'))
   try:
     os.makedirs(out_dir)
   except OSError as e:
@@ -94,10 +95,6 @@ def process_options():
   parser.add_option('-d', '--src-dir',
       help='Path of the source root dir. Overrides the default location of the '
            'source root dir when calculating the build directory.')
-  parser.add_option(
-      '-l',
-      '--landmines-path',
-      help='Path to the landmines file to use (defaults to .landmines)')
   parser.add_option('-v', '--verbose', action='store_true',
       default=('LANDMINES_VERBOSE' in os.environ),
       help=('Emit some extra debugging information (default off). This option '
@@ -140,12 +137,7 @@ def main():
                             universal_newlines=True)
     output, _ = proc.communicate()
     landmines.extend([('%s\n' % l.strip()) for l in output.splitlines()])
-  if options.landmines_path:
-    landmines_path = options.landmines_path
-  else:
-    landmines_path = os.path.join(options.src_dir, '.landmines')
-  clobber_if_necessary(landmines, options.src_dir,
-                       os.path.normpath(landmines_path))
+  clobber_if_necessary(landmines, options.src_dir)
 
   return 0