8271149: remove unreferenced functions from EncodingSupport_md.c

Reviewed-by: alanb

Author: MBaesken

src/java.instrument/unix/native/libinstrument/EncodingSupport_md.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2004, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -103,22 +103,6 @@ utfInitialize(void)
  }
 }
 
-/*
- * Terminate all utf processing
- */
-static void
-utfTerminate(void)
-{
- if ( iconvFromPlatform!=(iconv_t)-1 ) {
- (void)iconv_close(iconvFromPlatform);
- }
- if ( iconvToPlatform!=(iconv_t)-1 ) {
- (void)iconv_close(iconvToPlatform);
- }
- iconvToPlatform = (iconv_t)-1;
- iconvFromPlatform = (iconv_t)-1;
-}
-
 /*
  * Do iconv() conversion.
  * Returns length or -1 if output overflows.
@@ -176,16 +160,6 @@ utf8ToPlatform(char *utf8, int len, char *output, int outputMaxLen)
  return iconvConvert(iconvToPlatform, utf8, len, output, outputMaxLen);
 }
 
-/*
- * Convert Platform Encoding to UTF-8.
- * Returns length or -1 if output overflows.
- */
-static int
-platformToUtf8(char *str, int len, char *output, int outputMaxLen)
-{
- return iconvConvert(iconvFromPlatform, str, len, output, outputMaxLen);
-}
-
 int
 convertUft8ToPlatformString(char* utf8_str, int utf8_len, char* platform_str, int platform_len) {
  if (iconvToPlatform == (iconv_t)-1) {