Drop this patch, not needed after -Werror removal

net/czmq/patches/patch-src_zloop_c

@@ -1,12 +0,0 @@
-Index: src/zloop.c
---- src/zloop.c.orig
-+++ src/zloop.c
-@@ -582,7 +582,7 @@ zloop_timer_end (zloop_t *self, int timer_id)
-         //  from inside the poll loop. So, we hold the arg on the zombie
-         //  list, and process that list when we're done executing timers.
-         //  This hack lets us store an integer timer ID as a pointer
--        zlistx_add_end (self->zombies, (byte *) NULL + timer_id);
-+        zlistx_add_end (self->zombies, (void *)(uintptr_t)timer_id);
- 
-     if (self->verbose)
-         zsys_debug ("zloop: cancel timer id=%d", timer_id);