8199470: Remove unused property file.encoding.pkg

Reviewed-by: bpb, sherman

src/demo/share/java2d/J2DBench/src/j2dbench/ResultSet.java

@@ -77,7 +77,6 @@ public class ResultSet {
         "line.separator",
         "file.separator",
         "file.encoding",
-        "file.encoding.pkg",
         "java.class.path",
         "java.library.path",
         "java.io.tmpdir",

src/java.base/share/native/libjava/System.c

@@ -247,7 +247,6 @@ Java_java_lang_System_initProperties(JNIEnv *env, jclass cla, jobject props)
      *  user.language
      *  user.script, user.country, user.variant (if user's environment specifies them)
      *  file.encoding
-     *  file.encoding.pkg
      */
     PUTPROP(props, "user.language", sprops->language);
     if (sprops->script) {
@@ -266,7 +265,6 @@ Java_java_lang_System_initProperties(JNIEnv *env, jclass cla, jobject props)
     if (sprops->sun_stderr_encoding != NULL) {
         PUTPROP(props, "sun.stderr.encoding", sprops->sun_stderr_encoding);
     }
-    PUTPROP(props, "file.encoding.pkg", "sun.io");
 
     /* unicode_encoding specifies the default endianness */
     PUTPROP(props, "sun.io.unicode.encoding", sprops->unicode_encoding);

src/java.base/windows/native/libjava/java_props_md.c

@@ -629,7 +629,6 @@ GetJavaProperties(JNIEnv* env)
      *  user.language
      *  user.script, user.country, user.variant (if user's environment specifies them)
      *  file.encoding
-     *  file.encoding.pkg
      */
     {
         /*