fsevents: remove kFSEventStreamCreateFlagNoDefer polyfill
fsevents: remove kFSEventStreamCreateFlagNoDefer polyfill

The kFSEventStreamCreateFlagNoDefer flag is already
defined in CarbonCore/FSEvents.h since OS X 10.5.

Fixes #1000.

unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso