Remove libxml2 dependency on FreeBSD package

libxml2 is now included with the FreeBSD toolchain itself as a static link, so there's no need to require it on the host system, as Swift's own vendored copy will be used.

Author: CodingCarpincho

platforms/FreeBSD/makePackage

@@ -88,7 +88,6 @@ get_package_version()
 }
 
 LIBUUID_PKG_VERSION=$(get_package_version libuuid)
-LIBXML2_PKG_VERSION=$(get_package_version libxml2)
 PYTHON_PKG_VERSION=$(get_package_version python311)
 SQLITE3_PKG_VERSION=$(get_package_version sqlite3)
 
@@ -111,10 +110,6 @@ cat > "$METADATA_STAGING/manifest" <<EOF
       "version": "$LIBUUID_PKG_VERSION",
       "origin": "misc/libuuid"
     },
-    "libxml2": {
-      "version": "$LIBXML2_PKG_VERSION",
-      "origin": "textproc/libxml2"
-    },
     "python311": {
       "version": "$PYTHON_PKG_VERSION",
       "origin": "lang/python311"