Revert "Regression experiment: Temporarily revert to returning 0 from…

… bad achievement memory accesses."

This reverts commit a044d8c.

Core/RetroAchievements.cpp

@@ -166,13 +166,8 @@ static uint32_t read_memory_callback(uint32_t address, uint8_t *buffer, uint32_t
 			WARN_LOG(G3D, "RetroAchievements PeekMemory: Bad address %08x (%d bytes) (%08x was passed in)", address, num_bytes, orig_address);
 		}
 
-		// TEMPORARY EXPERIMENT:
-		// Revert to returning 0.
-		memset(buffer, 0, num_bytes);
-		return num_bytes;
-
 		// This tells rcheevos that the access was bad, which should now be handled properly.
-		// return 0;
+		return 0;
 	}
 
 	Memory::MemcpyUnchecked(buffer, address, num_bytes);