Enable: Replace use of overlayfs' override_creds with overlay_remounter

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This new solution does not require the use of non-upstreamed
override_creds patches.

Test: system/core/fs_mgr/tests/adb-remount-test.sh
Bug: 388912628
Change-Id: Ie35126cef39cd1d7e5e6c52cbd58fca2445b0563
diff --git a/fs_mgr/include/fs_mgr_overlayfs.h b/fs_mgr/include/fs_mgr_overlayfs.h
index a232bf1..253013b 100644
--- a/fs_mgr/include/fs_mgr_overlayfs.h
+++ b/fs_mgr/include/fs_mgr_overlayfs.h
@@ -47,7 +47,7 @@
 // b/388912628 removes the need for override_creds
 // Once this bug is fixed and has had enough soak time, remove this variable and hard code to false
 // where it used
-constexpr bool use_override_creds = true;
+constexpr bool use_override_creds = false;
 
 }  // namespace fs_mgr
 }  // namespace android