Revert "TEST: Enabling TimelineSemaphores for QCOM and Turnip"

This reverts commit 3cd33fce44.

src/video_core/vulkan_common/vulkan_device.cpp

@@ -1018,6 +1018,13 @@ bool Device::ShouldBoostClocks() const {
 }
 
 bool Device::HasTimelineSemaphore() const {
+    if (GetDriverID() == VK_DRIVER_ID_QUALCOMM_PROPRIETARY ||
+        GetDriverID() == VK_DRIVER_ID_MESA_TURNIP) {
+        // Timeline semaphores do not work properly on all Qualcomm drivers.
+        // They generally work properly with Turnip drivers, but are problematic on some devices
+        // (e.g. ZTE handsets with Snapdragon 870).
+        return false;
+    }
     return features.timeline_semaphore.timelineSemaphore;
 }