configure: do not create legacy symlinks

With more than three years since Meson was introduced in the build system, people
have had quite some time to move away from the foo-softmmu/qemu-system-* and
foo-linux-user/qemu-* symbolic links.  Remove them, and with them another
instance of the "softmmu" name for system emulators.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

configure

@@ -1605,21 +1605,11 @@ echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
 echo "MESON=$meson" >> $config_host_mak
 echo "NINJA=$ninja" >> $config_host_mak
 echo "EXESUF=$EXESUF" >> $config_host_mak
-
 # use included Linux headers for KVM architectures
 if test "$host_os" = "linux" && test -n "$linux_arch"; then
   symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
 fi
 
-for target in $target_list; do
-    target_dir="$target"
-    target_name=$(echo $target | cut -d '-' -f 1)$EXESUF
-    case $target in
-        *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
-        *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
-    esac
-done
-
 if test "$default_targets" = "yes"; then
   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
 fi