flo: remove duplicate vendor include

-include vendor/asus/flo/BoardConfigVendor.mk is in BoardConfigCommon.mk
so that deb can inherit it. Comment it out of BoardConfig.mk.

Change-Id: I87f1b6825bba666a823b06372fc5ead1e9650c9d
Merge remote-tracking branch 'cm/cm-11.0' into HEAD