Remove LASTCHANGE dependency from remoting host on windows

Remoting host on windows contains latest revision number so parts
of remoting are rebuilt every time revision number changes. Removed
dependency on LASTCHANGE to prevent ninja from rebuilding remoting
every time. The file is still used.

BUG=332679

Review URL: https://codereview.chromium.org/142713006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247864 0039d316-1c4b-4281-b951-d872f2087c98

remoting/remoting_host_win.gypi

@@ -359,7 +359,9 @@
 
         # Generates localized resources for the Windows binaries.
         # The substitution strings are taken from:
-        #   - build/util/LASTCHANGE - the last source code revision.
+        #   - build/util/LASTCHANGE - the last source code revision. There is
+        #       no explicit dependency on this file to avoid rebuilding the host
+        #       after unrelated changes.
         #   - chrome/VERSION - the major, build & patch versions.
         #   - remoting/VERSION - the chromoting patch version (and overrides
         #       for chrome/VERSION).
@@ -389,7 +391,6 @@
               },
               'inputs': [
                 '<(chrome_version_path)',
-                '<(lastchange_path)',
                 '<(remoting_version_path)',
                 '<(RULE_INPUT_PATH)',
               ],