Remove LayoutTests/perf and associated references

LayoutTests/TestExpectations

 #
 # turn off Slimming Paint tests for all non-Linux platforms...
 crbug.com/453972 [ Mac ] virtual/slimmingpaint/ [ Skip ]
 crbug.com/453972 [ Win ] virtual/slimmingpaint/ [ Skip ]
 crbug.com/453972 [ Android ] virtual/slimmingpaint/ [ Skip ]
 # except for fast/block/, as a sanity test directory.
 crbug.com/453972 [ Mac ] virtual/slimmingpaint/fast/block [ Pass ]
 crbug.com/453972 [ Win ] virtual/slimmingpaint/fast/block [ Pass ]
 crbug.com/453972 [ Android ] virtual/slimmingpaint/fast/block [ Pass ]
 # On linux, run fast/ for the listed sub-directories only.
@@ skipping 71 matching lines @@
 crbug.com/298211 animations/dynamic-stylesheet-loading.html [ Pass Failure Timeout ]
 crbug.com/321460 animations/animation-direction-normal.html [ Pass ImageOnlyFailure Timeout ]
 
 crbug.com/328996 [ Mac Debug ] http/tests/media/video-seek-to-middle.html [ Pass Failure ]
 
 # This test is slow due to Mesa slowness.
 crbug.com/244481 virtual/gpu/canvas/philip/tests/2d.shadow.blur.low.html [ Skip ]
 
 crbug.com/9798 [ Win ] http/tests/misc/redirect-with-quotes.php [ Pass Timeout ]
 
-crbug.com/339118 perf/compositor-touch-hit-rects.html [ Failure Pass ]
 crbug.com/339118 fast/events/touch/compositor-touch-hit-rects-scroll.html [ Failure Pass ]
 crbug.com/339118 virtual/pointerevent/fast/events/touch/compositor-touch-hit-rects-scroll.html [ Failure Pass ]
 crbug.com/339118 virtual/scroll_customization/fast/events/touch/compositor-touch-hit-rects-scroll.html [ Failure Pass ]
 crbug.com/339118 virtual/slimmingpaint/fast/events/touch/compositor-touch-hit-rects-scroll.html [ Skip ]
 crbug.com/430980 [ Mac ] fast/events/hit-test-counts.html [ Failure Pass ]
 crbug.com/430980 [ Mac ] virtual/slimmingpaint/fast/events/hit-test-counts.html [ Skip ]
 
 # The result here is flaky. So a rebaseline won't make these [ Pass Timeout ].
 crbug.com/66751 [ Linux Mac ] http/tests/local/link-stylesheet-load-order-preload.html [ Failure ]
 crbug.com/66751 [ Linux Mac ] http/tests/local/link-stylesheet-load-order.html [ Failure ]
@@ skipping 652 matching lines @@
 crbug.com/337736 [ Linux Win ] fast/forms/time-multiple-fields/time-multiple-fields-stepup-stepdown-from-renderer.html [ Failure Pass ]
 crbug.com/337736 [ Linux Win ] fast/forms/time-multiple-fields/time-multiple-fields-spinbutton-click-in-iframe.html [ Failure Pass ]
 crbug.com/337736 [ Linux Win ] fast/forms/time-multiple-fields/time-multiple-fields-spinbutton-change-and-input-events.html [ Failure Pass ]
 crbug.com/337736 [ Linux Win ] fast/forms/time-multiple-fields/time-multiple-fields-value-set-empty.html [ Failure Pass ]
 crbug.com/337736 [ Linux Win ] fast/forms/time-multiple-fields/time-multiple-fields-validity-badinput.html [ Failure Pass ]
 crbug.com/337736 [ Linux Win ] fast/forms/time-multiple-fields/time-multiple-fields-state-change-on-focus-or-blur.html [ Failure Pass ]
 crbug.com/337736 [ Linux Win ] fast/forms/time-multiple-fields/time-multiple-fields-wheel-event.html [ Failure Pass ]
 crbug.com/337736 [ Linux Win ] fast/forms/time-multiple-fields/time-multiple-fields-tabindex.html [ Failure Pass ]
 crbug.com/393098 [ Win7 ] fast/forms/week-multiple-fields/week-multiple-fields-mouse-events.html [ Failure Pass ]
 crbug.com/337774 [ Debug ] svg/animations/use-while-animating-crash.html [ Crash Pass ]
-crbug.com/309369 perf/accessibility-title-ui-element.html [ Pass Timeout ]
 crbug.com/310292 [ Mac ] http/tests/security/video-poster-cross-origin-crash.html [ Failure Pass ]
 
 crbug.com/460885 fast/forms/month-multiple-fields/month-multiple-fields-preserve-value-after-history-back.html [ Failure Pass ]
 
 crbug.com/310323 [ Linux Debug ] http/tests/plugins/third-party-cookie-accept-policy.html [ Crash Pass ]
 crbug.com/310323 [ Debug ] http/tests/security/contentSecurityPolicy/report-multiple-violations-02.html [ Crash Pass ]
 
 crbug.com/311301 fast/history/history_reload.html [ Failure Pass ]
 
 crbug.com/316151 [ Win ] virtual/deferred/fast/images/2-comp.html [ Pass Timeout ]
@@ skipping 1166 matching lines @@
 
 crbug.com/488101 fast/loader/unload-form-post-about-blank.html [ Pass Failure ]
 crbug.com/488185 [ Debug ] fast/layers/layer-visibility-sublayer.html [ Pass Failure ]
 
 crbug.com/488445 [ Win7 Debug ] http/tests/fetch/window/request.html [ Pass Failure ]
 
 crbug.com/474798 fast/repaint/align-self-change-keeping-geometry-grid.html [ Failure ]
 crbug.com/474798 fast/repaint/justify-self-change-keeping-geometry.html [ Failure ]
 crbug.com/474798 virtual/slimmingpaint/fast/repaint/align-self-change-keeping-geometry-grid.html [ Skip ]
 crbug.com/474798 virtual/slimmingpaint/fast/repaint/justify-self-change-keeping-geometry.html [ Skip ]