Re-Enable MipmapTest.TextureCubeGeneralLevelZero/ES2_VULKAN The test MipmapTest.TextureCubeGeneralLevelZero/ES2_VULKAN was disabled for Vulkan Android due to Nexus 5x and Pixel 2 issues. The Nexus 5x has been removed from the test infrastructure and the Pixel 2 issue seems to have sorted itself out. Bug: angleproject:2817 Test: angle_end2end_tests MipmapTest.TextureCubeGeneralLevelZero/ES2_VULKAN Change-Id: I85bb56707def2906194c34942fcd74a811255abc Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1558293 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Tim Van Patten <timvp@google.com>