Avoid compiling wxme test files.

Since that requires `racket/draw', which requires libcairo, which is
missing on some build machines.  It might be needed in the future, but
for now it's better to make it easier to add build machines.

collects/tests/drracket/snip/info.rkt

@@ -1,6 +1,5 @@
 #lang setup/infotab
 
-(define compile-omit-paths 
-  (list "collapsed.rkt" 
-        "2htdpimage.rkt" 
-        "image.rkt"))
+;; compiling the wxme files requires `racket/draw' which fails on build
+;; machines without libcairo.  So avoid compiling them.
+(define compile-omit-paths 'all)