ignore generated ac701 directory
ignore generated ac701 directory

Change-Id: Ifcc4058e3ca60867ad9dbfe7448ebd0b6d5555bc

cambridgehackers/connectal,hanw/connectal,cambridgehackers/connectal,chenm001/connectal,chenm001/connectal,cambridgehackers/connectal,csail-csg/connectal,8l/connectal,csail-csg/connectal,cambridgehackers/connectal,8l/connectal,hanw/connectal,8l/connectal,csail-csg/connectal,hanw/connectal,hanw/connectal,8l/connectal,8l/connectal,hanw/connectal,chenm001/connectal,cambridgehackers/connectal,chenm001/connectal,csail-csg/connectal,csail-csg/connectal,chenm001/connectal