Don't bother running GC as it doesn't seem to get as much memory back

anyway plus the run_gc! method in the fastcgi dispatcher is a disaster
as it disables GC completely except for when it is forced by making a
call to the run_gc! method.

public/dispatch.fcgi

@@ -28,15 +28,11 @@ protected
     super
 
     # Restart if we've hit our memory limit
-    if resident_size > 512
-      run_gc!
-
     if resident_size > 512
       dispatcher_log :info, "restarting due to memory limit"
       restart!
     end
   end
-  end
 
   def resident_size
     # Read statm to get process sizes. Format is
@@ -50,4 +46,4 @@ protected
   end
 end
 
-OpenStreetMapFCGIHandler.process! nil, 10
+OpenStreetMapFCGIHandler.process!