Revert "parse_metadata_use(): omit empty text tokens."

This reverts commit 52f6b55d51e2accaa446bc5d6920421959289baa.

Since split() never return empty tokens, this patch does nothing.
diff --git a/pym/repoman/utilities.py b/pym/repoman/utilities.py
index ceb1ba1..9d4898e 100644
--- a/pym/repoman/utilities.py
+++ b/pym/repoman/utilities.py
@@ -157,8 +157,7 @@
 				uselist[pkg_flag] = {}
 
 			# (flag_restrict can be None)
-			uselist[pkg_flag][flag_restrict] = " ".join( \
-					[x for x in "".join(inner_text).split() if x])
+			uselist[pkg_flag][flag_restrict] = " ".join("".join(inner_text).split())
 
 	return uselist