BaseTools/build_rule.template: Removing unrecognized 'ULL' from assembly files

These characters might be introduced when using 64bit Fixed Pcd into assembly code.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Yingke Liu <yingke.d.liu@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2-buildtools/code/trunk/BaseTools@2621 c2973edb-eda0-4c78-bc6a-9341b269661f