BaseTools: Eot - fix variable names
    
    1) currently a couple classes use m instead of self (including some mixed
    functions that should have previously failed).
    2) deleted some blank lines.
    
    Cc: Yonghong Zhu <yonghong.zhu@intel.com>
    Cc: Liming Gao <liming.gao@intel.com>
    Contributed-under: TianoCore Contribution Agreement 1.1
    Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
    Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>