Remove unused parameter from method declaration.

Motivation:

We had an unused paramter on a method, we should just remove it to keep code clean.

Modifications:

- Remove parameter
- Fix typo in javadoc

Result:

Cleanup done.

codec-http2/src/main/java/io/netty/handler/codec/http2/HttpConversionUtil.java

@@ -254,7 +254,7 @@ public static void addHttp2ToHttpHeaders(int streamId, Http2Headers sourceHeader
      * @param httpVersion What HTTP/1.x version {@code outputHeaders} should be treated as when doing the conversion.
      * @param isTrailer {@code true} if {@code outputHeaders} should be treated as trailing headers.
      * {@code false} otherwise.
-     * @param isReqeust {@code true} if the {@code outputHeaders} will be used in a request message.
+     * @param isRequest {@code true} if the {@code outputHeaders} will be used in a request message.
      * {@code false} for response message.
      * @throws Http2Exception If not all HTTP/2 headers can be translated to HTTP/1.x.
      */
@@ -302,8 +302,7 @@ public static Http2Headers toHttp2Headers(HttpMessage in, boolean validateHeader
             if (!isOriginForm(requestTargetUri) && !isAsteriskForm(requestTargetUri)) {
                 // Attempt to take from HOST header before taking from the request-line
                 String host = inHeaders.getAsString(HttpHeaderNames.HOST);
-                setHttp2Authority(inHeaders,
-                        (host == null || host.isEmpty()) ? requestTargetUri.getAuthority() : host, out);
+                setHttp2Authority((host == null || host.isEmpty()) ? requestTargetUri.getAuthority() : host, out);
             }
         } else if (in instanceof HttpResponse) {
             HttpResponse response = (HttpResponse) in;
@@ -358,7 +357,7 @@ private static AsciiString toHttp2Path(URI uri) {
         return path.isEmpty() ? EMPTY_REQUEST_PATH : new AsciiString(path);
     }
 
-    private static void setHttp2Authority(HttpHeaders in, String autority, Http2Headers out) {
+    private static void setHttp2Authority(String autority, Http2Headers out) {
         // The authority MUST NOT include the deprecated "userinfo" subcomponent
         if (autority != null) {
             int endOfUserInfo = autority.indexOf('@');