remove sme from M4 Fortran flags as gfortran couples it with sve

Author: martin-frbg

Makefile.arm64

@@ -305,7 +305,7 @@ endif
 
 ifeq ($(CORE), VORTEXM4)
 CCOMMON_OPT += -march=armv8.4-a+sme
-FCOMMON_OPT += -march=armv8.4-a+sme
+FCOMMON_OPT += -march=armv8.4-a
 endif
 
 ifeq (1, $(filter 1,$(GCCVERSIONGTEQ9) $(ISCLANG)))