Synchronize with UGW-8.1.1: Remove src/include/mcat3.0/

src/include/mcat3.0/drv_dsl_cpe_vrx_msg_config_pmd.h

src/include/mcat3.0/drv_dsl_cpe_vrx_msg_const.h

src/include/mcat3.0/drv_dsl_cpe_vrx_msg_dmt_scope.h

src/include/mcat3.0/drv_dsl_cpe_vrx_msg_ghs_status.h

src/include/mcat3.0/drv_dsl_cpe_vrx_msg_olr.h

src/include/mcat3.0/drv_dsl_cpe_vrx_msg_perf_pmd.h

src/include/mcat3.0/drv_dsl_cpe_vrx_msg_tc_counters.h