Revert "Settings: Clock font style [2/2]"

This reverts commit 964b3454dc97a0e74720c84b2d2b2218fcc69469.
Revert "Status bar clock and date customization (2/2)"
this reverts commit: https://github.com/cristianomatos/android_packages_apps_Settings/commit/895fbafc130fb17825a414b95a47099977d580c0

Change-Id: Ic075c8d8708ae2004607bae42cd2607a041f4d9b
SystemUI: allow for the clock to be centered (2 of 2)

    This allows the clock to be centered and does
    not break the normal functionality of the status bar.
    Overflow for status bar icons is adjusted accordingly
    when the clock is centered. The clock slides in/out
    when centered and the ticker is running.

Change-Id: I4f71263d94128619e3347585e188b29ab3a7f19b