gn2bp: Remove code for gen_version_module

Which is not used in cronet
Test: ./update_results.sh

Change-Id: I2407997f51b6e89e960144c56d504fcf772d26ee
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index 0466680..2a08530 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -555,21 +555,6 @@
   return source_module
 
 
-def create_gen_version_module(blueprint, target, bp_module_name):
-  module = Module('genrule', bp_module_name, gn_utils.GEN_VERSION_TARGET)
-  script_path = gn_utils.label_to_path(target.script)
-  module.genrule_headers.add(bp_module_name)
-  module.tool_files.add(script_path)
-  module.out.update(target.outputs)
-  module.srcs.update(gn_utils.label_to_path(src) for src in target.inputs)
-  module.cmd = ' '.join([
-      'python3 $(location %s)' % script_path, '--no_git',
-      '--changelog=$(location CHANGELOG)', '--cpp_out=$(out)'
-  ])
-  blueprint.add_module(module)
-  return module
-
-
 def create_proto_group_modules(blueprint, gn, module_name, target_names):
   # TODO(lalitm): today, we're only adding a Java lite module because that's
   # the only one used in practice. In the future, if we need other target types
@@ -863,11 +848,7 @@
     if module is None:
       return None
   elif target.type == 'action':
-    if target.type == 'action' and \
-        target.name == gn_utils.GEN_VERSION_TARGET:
-      module = create_gen_version_module(blueprint, target, bp_module_name)
-    else:
-      module = create_action_module(blueprint, target)
+    module = create_action_module(blueprint, target)
   elif target.type == 'action_foreach':
     module = create_action_foreach_modules(blueprint, target)
   elif target.type == 'copy':