File imb-cpp-flags.patch of Package mpitests

--- mpi-benchmarks-IMB-v2021.3.orig/src_cpp/Makefile	2021-10-01 15:09:19.000000000 +0200
+++ mpi-benchmarks-IMB-v2021.3/src_cpp/Makefile	2022-09-30 11:15:13.866410222 +0200
@@ -77,8 +77,8 @@
 CXX=mpiicpc
 endif
 override CPPFLAGS += -I.
-override CFLAGS += -g -O0 -Wall -Wno-long-long
-override CXXFLAGS += -g -O0 -Wall -Wextra -pedantic -Wno-long-long
+override CFLAGS += -Wno-long-long
+override CXXFLAGS +=  -Wno-long-long
 ifdef WITH_OPENMP
 override CFLAGS += -fopenmp
 override CXXFLAGS += -fopenmp