Causes issues on ppc64le and riscv64

--- a/Makefile.ckati
+++ b/Makefile.ckati
@@ -71,7 +71,6 @@ KATI_CXX_TEST_EXES := $(patsubst $(KATI_INTERMEDIATES_PATH)/%.o,$(KATI_BIN_PATH)
 
 KATI_CXXFLAGS := -g -W -Wall -MMD -MP
 KATI_CXXFLAGS += -O -DNOLOG
-KATI_CXXFLAGS += -march=native
 #KATI_CXXFLAGS += -pg
 
 ifeq ($(shell uname),Linux)