Google closure compiler doesn't have --verbose.

This means that it simply prints "--verbose" is not a valid option and doesn't write the result to standard out.

Signed-off-by: Timothée Peignier <timothee.peignier@tryphon.org>

pipeline/compressors/closure/__init__.py

@@ -5,6 +5,4 @@ from pipeline.compressors import SubProcessCompressor
 class ClosureCompressor(SubProcessCompressor):
     def compress_js(self, js):
         command = '%s %s' % (settings.PIPELINE_CLOSURE_BINARY, settings.PIPELINE_CLOSURE_ARGUMENTS)
-        if self.verbose:
-            command += ' --verbose'
         return self.execute_command(command, js)