Re-enable Delete/FileManagerBrowserTest all bots

Enabled in RELEASE, now re-enable this test in DEBUG/MSAN/ASAN.

Bug: 836254
Change-Id: I5db5f4d91fa1cca880d17d8b428598562b487abf
Reviewed-on: https://chromium-review.googlesource.com/1046685Reviewed-by: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556401}

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

@@ -177,13 +177,8 @@ WRAPPED_INSTANTIATE_TEST_CASE_P(
         TestParameter(NOT_IN_GUEST_MODE, "renameNewDirectoryDownloads"),
         TestParameter(NOT_IN_GUEST_MODE, "renameNewDirectoryDrive")));
 
-#if defined(DISABLE_SLOW_FILESAPP_TESTS)
-#define MAYBE_Delete DISABLED_Delete
-#else
-#define MAYBE_Delete Delete
-#endif
 WRAPPED_INSTANTIATE_TEST_CASE_P(
-    MAYBE_Delete,
+    Delete,
     FileManagerBrowserTest,
     ::testing::Values(
         TestParameter(NOT_IN_GUEST_MODE,