xcode: Remove unused function.

pylib/gyp/generator/xcode.py

Index: pylib/gyp/generator/xcode.py
===================================================================
--- pylib/gyp/generator/xcode.py	(revision 1758)
+++ pylib/gyp/generator/xcode.py	(working copy)
@@ -480,39 +480,6 @@
       raise
 
 
-cached_xcode_version = None
-def InstalledXcodeVersion():
-  """Fetches the installed version of Xcode, returns empty string if it is
-  unable to figure it out."""
-
-  global cached_xcode_version
-  if not cached_xcode_version is None:
-    return cached_xcode_version
-
-  # Default to an empty string
-  cached_xcode_version = ''
-
-  # Collect the xcodebuild's version information.
-  try:
-    import subprocess
-    cmd = ['/usr/bin/xcodebuild', '-version']
-    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE)
-    xcodebuild_version_info = proc.communicate()[0]
-    # Any error, return empty string
-    if proc.returncode:
-      xcodebuild_version_info = ''
-  except OSError:
-    # We failed to launch the tool
-    xcodebuild_version_info = ''
-
-  # Pull out the Xcode version itself.
-  match_line = re.search('^Xcode (.*)$', xcodebuild_version_info, re.MULTILINE)
-  if match_line:
-    cached_xcode_version = match_line.group(1)
-  # Done!
-  return cached_xcode_version
-
-
 def AddSourceToTarget(source, type, pbxp, xct):
   # TODO(mark): Perhaps source_extensions and library_extensions can be made a
   # little bit fancier.