anv: remove needless VALGRIND_MAKE_MEM_DEFINED

This is already invoked in the following VG_NOACCESS_READ() call.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/vulkan/anv_allocator.c

@@ -758,7 +758,6 @@ anv_state_stream_finish(struct anv_state_stream *stream)
 
    struct anv_state_stream_block *next = stream->block;
    while (next != NULL) {
-      VG(VALGRIND_MAKE_MEM_DEFINED(next, sizeof(*next)));
       struct anv_state_stream_block sb = VG_NOACCESS_READ(next);
       VG(VALGRIND_MEMPOOL_FREE(stream, sb._vg_ptr));
       VG(VALGRIND_MAKE_MEM_UNDEFINED(next, block_size));