Revert "Vulkan: Attempt to fix the tsan complain regarding volk." This reverts commit 62e5870452e1e2d4a55ee1307ada27b101d89dbf. Reason for revert: Suspected to be causing the win-trace bot flakiness (https://anglebug.com/8063) Original change's description: > Vulkan: Attempt to fix the tsan complain regarding volk. > > In certain cases, I am seeing volk function pointer been set while it is > still being accessed. See > https://chromium-swarm.appspot.com/task?id=60b37aa811f8b410. My guess it > is related to some tests configs that end up with RendererVk gets > initialized while other instance is still running. This is attempt to > fix the tsan complain by only load volk function pointer if needed. > > Bug: angleproject:8055 > Change-Id: I5dcc62876bf93a250080de1f8e1b97d2b7570ab8 > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4300072 > Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> > Commit-Queue: Charlie Lao <cclao@google.com> Bug: angleproject:8055 Change-Id: Ie9fe707113656bcc803aacbf9559671564944b69 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4309928 Commit-Queue: Amirali Abdolrashidi <abdolrashidi@google.com> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>