remove pkg-config dependency

qemu/configure

@@ -268,11 +268,6 @@ libtool="${LIBTOOL-${cross_prefix}libtool}"
 nm="${NM-${cross_prefix}nm}"
 strip="${STRIP-${cross_prefix}strip}"
 windres="${WINDRES-${cross_prefix}windres}"
-pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
-query_pkg_config() {
-    "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
-}
-pkg_config=query_pkg_config
 
 # If the user hasn't specified ARFLAGS, default to 'rv', just as make does.
 ARFLAGS="${ARFLAGS-rv}"
@@ -595,7 +590,6 @@ for opt do
   --static)
     static="yes"
     LDFLAGS="-static $LDFLAGS"
-    QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
   ;;
   --mandir=*) mandir="$optarg"
   ;;
@@ -1065,13 +1059,6 @@ else
     echo big/little test failed
 fi
 
-##########################################
-# pkg-config probe
-
-if ! has "$pkg_config_exe"; then
-  error_exit "pkg-config binary '$pkg_config_exe' not found"
-fi
-
 ##########################################
 # libtool probe