fix: remove unused method indexOfUnsafeChar (#216)

* fix: remove unused method `indexOfUnsafeChar`

* Inline second argument of `indexOfFirstPercentChar`

Author: dwalluck

src/main/java/com/github/packageurl/PackageURL.java

@@ -589,20 +589,13 @@ private static String toLowerCase(String s) {
         return new String(chars);
     }
 
-    private static int indexOfPercentChar(final byte[] bytes, final int start) {
-        return IntStream.range(start, bytes.length)
+    private static int indexOfFirstPercentChar(final byte[] bytes) {
+        return IntStream.range(0, bytes.length)
                 .filter(i -> isPercent(bytes[i]))
                 .findFirst()
                 .orElse(-1);
     }
 
-    private static int indexOfUnsafeChar(final byte[] bytes, final int start) {
-        return IntStream.range(start, bytes.length)
-                .filter(i -> shouldEncode(bytes[i]))
-                .findFirst()
-                .orElse(-1);
-    }
-
     private static byte percentDecode(final byte[] bytes, final int start) {
         if (start + 2 >= bytes.length) {
             throw new ValidationException("Incomplete percent encoding at offset " + start + " with value '"
@@ -636,7 +629,7 @@ private static String percentDecode(final String source) {
         }
 
         byte[] bytes = source.getBytes(StandardCharsets.UTF_8);
-        int i = indexOfPercentChar(bytes, 0);
+        int i = indexOfFirstPercentChar(bytes);
 
         if (i == -1) {
             return source;