DevTools: remove rebaselined tests from TestExpectations

This is a follow-up from https://chromium-review.googlesource.com/c/chromium/src/+/846026.
These tests were rebaselined and are now passing without flakes.

Bug: 626703, 751952
Change-Id: I0497c373ae1b99e728b8f81cc52d11c9521e725e
Reviewed-on: https://chromium-review.googlesource.com/847309Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Will Chen <chenwilliam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#526536}

third_party/WebKit/LayoutTests/TestExpectations

@@ -1908,16 +1908,11 @@ crbug.com/723826 http/tests/security/w3c/cross-origin-objects.html [ Failure Pas
 # Untriaged failures after https://crrev.com/c/543695/.
 # These need to be updated but appear not to be related to that change.
 crbug.com/626703 http/tests/devtools/indexeddb/database-refresh-view.js [ Pass Failure ]
-crbug.com/626703 http/tests/devtools/application-panel/resources-panel-selection-on-reload.js [ Pass Failure ]
 crbug.com/626703 http/tests/devtools/extensions/extensions-sidebar.js [ Pass Failure ]
-crbug.com/626703 http/tests/devtools/network/network-columns-visible.js [ Pass Failure ]
-crbug.com/626703 http/tests/devtools/persistence/persistence-tabbed-editor-opens-filesystem-uisourcecode.js [ Pass Failure ]
 crbug.com/751952 external/wpt/editing/run/forwarddelete.html [ Failure Pass Timeout ]
 crbug.com/751952 fast/text/international/complex-text-rectangle.html [ Timeout Pass ]
 crbug.com/751952 editing/selection/modify_extend/extend_by_character.html [ Pass Failure ]
 crbug.com/751952 fast/dom/Range/getClientRects.html [ Pass Failure ]
-crbug.com/751952 http/tests/devtools/console/console-format.js [ Pass Failure ]
-crbug.com/751952 http/tests/devtools/unit/datagrid-editable-longtext.js [ Pass Failure ]
 crbug.com/751952 http/tests/devtools/console/console-uncaught-promise.js [ Pass Failure ]
 crbug.com/751952 virtual/origin-trials-runtimeflags-disabled/http/tests/origin_trials/webexposed/budget-api-origin-trial-interfaces.html [ Pass Failure ]