celox-common: move to 4.6 toolchain

This change removes the custom 4.4.3 configuration.

Change-Id: Ifbc72c4abb6d5f96cd6b91aa120df35c667c921c
Merge remote-tracking branch 'cm/cm-10.1' into HEAD

Change-Id: I012bb901f3039c47b81a988b6341c303cfb972a9