Revert "add guard to the . python implementation"

reason: causes syntax problems to some people, and there may be bigger
changes due to evaluating merging with ultisnips anyway.

This reverts commit ad850f3.

Author: MarcWeber

Diff for: snippets/python.snippets

@@ -76,7 +76,6 @@ snippet cascii
 snippet ld
 	${1:var} = lambda ${2:vars} : ${3:action}
 snippet .
-guard left =~ '^\s*$'
 	self.
 snippet try Try/Except
 	try: