remove extra c/cxx flags

Signed-off-by: Maksim Fedotov <maksim.fedotov@flant.com>

Author: nevermarine

images/qemu/werf.inc.yaml

@@ -219,8 +219,6 @@ shell:
 
     ./configure \
       --target-list="x86_64-softmmu" \
-      --extra-cflags="-march=x86-64-v2 -mno-avx2 -mno-fma" \
-      --extra-cxxflags="-march=x86-64-v2 -mno-avx2 -mno-fma" \
       --with-pkgversion="-dvp" \
       --with-coroutine=ucontext \
       --tls-priority="@QEMU,SYSTEM" \