remove another revert

Author: andrewseguin

CHANGELOG.md

@@ -6,7 +6,6 @@
 
 * **datepicker:** inconsistent arrow color between popup and touch modes ([#11535](https://github.com/angular/material2/issues/11535)) ([bb297c9](https://github.com/angular/material2/commit/bb297c9))
 * **dialog:** not closing correctly when detached externally ([#11516](https://github.com/angular/material2/issues/11516)) ([be1b5e6](https://github.com/angular/material2/commit/be1b5e6))
-* **overlay:** flexible overlay with push not handling scroll offset and position locking ([#11421](https://github.com/angular/material2/issues/11421)) ([55aaa03](https://github.com/angular/material2/commit/55aaa03))
 * **select:** inconsistent openedChange event dispatched between browsers ([#11461](https://github.com/angular/material2/issues/11461)) ([4ef9cb0](https://github.com/angular/material2/commit/4ef9cb0))
 * **tabs:** Set initial ink bar width as 0 width ([#11585](https://github.com/angular/material2/issues/11585)) ([c977763](https://github.com/angular/material2/commit/c977763))
 * **tooltip:** don't open for mouse and touch focus ([#10728](https://github.com/angular/material2/issues/10728)) ([74f4364](https://github.com/angular/material2/commit/74f4364))