Remove reference to MoltenVK issue 175 which is fixed now
diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index 3c8882e..5e5d2b1 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -440,8 +440,6 @@
block is migrated by WDDM to system RAM, which degrades performance. It doesn't
matter if that particular memory block is actually used by the command buffer
being submitted.
-- On Mac/MoltenVK there is a known bug - [Issue #175](https://github.com/KhronosGroup/MoltenVK/issues/175)
- which requires unmapping before GPU can see updated texture.
- Keeping many large memory blocks mapped may impact performance or stability of some debugging tools.
\section memory_mapping_cache_control Cache flush and invalidate
