[SourcesManager] Removed unused #git_remote_reachable? method

lib/cocoapods/sources_manager.rb

@@ -169,18 +169,6 @@ module Pod
         end
       end
 
-      # Returns whether a git repo's remote is reachable.
-      #
-      # @param  [Pathname] dir
-      #         The directory where the source is stored.
-      #
-      # @return [Bool] Whether the given source's remote is reachable.
-      #
-      def git_remote_reachable?(dir)
-        Dir.chdir(dir) { git('ls-remote') }
-        $?.success?
-      end
-
       # Returns whether a source is a GIT repo.
       #
       # @param  [Pathname] dir

spec/unit/sources_manager_spec.rb

@@ -134,11 +134,6 @@ module Pod
         UI.warnings.should.include('not able to update the `master` repo')
       end
 
-      it 'returns whether a source has a reachable git remote' do
-        SourcesManager.git_remote_reachable?(repo_make('a_new_repo_that_is_new')).should.be.false
-        SourcesManager.git_remote_reachable?(SourcesManager.master_repo_dir).should.be.true
-      end
-
       it "returns whether a source is backed by a git repo" do
         SourcesManager.git_repo?(SourcesManager.master_repo_dir).should.be.true
         SourcesManager.git_repo?(Pathname.new('/tmp')).should.be.false