housekeeping: remove upstreamed patch

Pushed upstream as http://hg.mozilla.org/mozilla-central/rev/526ea23c8b21

mozilla-jemalloc-526152.patch

@@ -1,32 +0,0 @@
-From: David Mandelin <dmandelin@mozilla.com>
-
-diff --git a/memory/jemalloc/jemalloc.c b/memory/jemalloc/jemalloc.c
---- a/memory/jemalloc/jemalloc.c
-+++ b/memory/jemalloc/jemalloc.c
-@@ -5792,24 +5792,24 @@ __attribute__((noinline))
- #else
- inline
- #endif
- void *
- memalign(size_t alignment, size_t size)
- {
- 	void *ret;
- 
--	assert(((alignment - 1) & alignment) == 0 && alignment >=
--	    sizeof(void *));
-+	assert(((alignment - 1) & alignment) == 0);
- 
- 	if (malloc_init()) {
- 		ret = NULL;
- 		goto RETURN;
- 	}
- 
-+	alignment = alignment < sizeof(void*) ? sizeof(void*) : alignment;
- 	ret = ipalloc(alignment, size);
- 
- RETURN:
- #ifdef MALLOC_XMALLOC
- 	if (opt_xmalloc && ret == NULL) {
- 		_malloc_message(_getprogname(),
- 		": (malloc) Error in memalign(): out of memory\n", "", "");
- 		abort();