Revert "SystemUI: fix hidden clock style after a reboot"

This reverts commit 28a5f8f4fc47e9623327caa5a4a642f8c17569b1.
Revert "Add missing center clock layout on MSIM device."

This reverts commit 5b70f5b8144bfddbbd8a76e56e9396236e1ec249.
Revert "SystemUI: allow for the clock to be centered (1 of 2)"

This reverts commit 36672e70e1d28d54c584f5e5ec978392381d0027.