Revert unintended preview lib marker

Signed-off-by: Larsen, Steffen <[email protected]>

Author: steffenlarsen

sycl/test-e2e/PreviewBreakingChanges/preview_lib_marker.cpp

@@ -1,4 +1,6 @@
-// RUN: %clangxx -fsycl %s -Wno-error=unused-command-line-argument -o %t.out
+// REQUIRES: preview-breaking-changes-supportedAdd a comment on  lines L1 to L2Add diff commentMarkdown input:  edit mode selected.WritePreviewHeadingBoldItalicQuoteCodeLinkUnordered listNumbered listTask listMentionReferenceSaved repliesAdd FilesPaste, drop, or click to add filesCancelCommentStart a reviewReturn to code
+
+// RUN: %clangxx -fsycl -fpreview-breaking-changes %s -Wno-error=unused-command-line-argument -o %t.out
 // RUN: %{run} %t.out
 
 // Test to help identify that E2E testing correctly detects and uses the preview