Remove unused patch.

waf-1.6.6-syntax.patch

@@ -1,26 +0,0 @@
-Index: waflib/extras/review.py
-===================================================================
---- waflib/extras/review.py	(revision 11401)
-+++ waflib/extras/review.py	(revision 11402)
-@@ -47,7 +47,7 @@
- 
- 	def __delitem__(self, key):
- 		if not key in self._keys:
--			raise KeyError, key
-+			raise KeyError(key)
- 		dict.__delitem__(self, key)
- 		self._keys.remove(key)
- 
-Index: waflib/extras/md5_tstamp.py
-===================================================================
---- waflib/extras/md5_tstamp.py	(revision 11401)
-+++ waflib/extras/md5_tstamp.py	(revision 11402)
-@@ -33,7 +33,7 @@
- 	self.restore_real()
- 	try:
- 		Build.hash_cache = self.hash_cache or {}
--	except Exception, e:
-+	except Exception as e:
- 		Build.hash_cache = {}
- Build.BuildContext.restore_real = Build.BuildContext.restore
- Build.BuildContext.restore      = restore