guile: Revert r18907 ("Improve `disable-gc-sensitive-tests.patch'.").

This patch no longer applies to `master' and may be unnecessary now.

svn path=/nixpkgs/trunk/; revision=18936

pkgs/development/interpreters/guile/disable-gc-sensitive-tests.patch

@@ -3,17 +3,6 @@ compiling with `-O0' (as is done with coverage analysis) since there may
 be many false references held on the stack, leading to the failure of
 such tests.
 
---- a/test-suite/tests/gc.test
-+++ b/test-suite/tests/gc.test
-@@ -59,6 +59,7 @@
- 
- (with-test-prefix "gc"
-   (pass-if "Unused modules are removed"
-+           (throw 'unresolved)
- 	   (let* ((guard (make-guardian))
-                   (total 1000))
- 
-
 --- a/test-suite/tests/threads.test
 +++ b/test-suite/tests/threads.test
 @@ -366,6 +366,7 @@