Removed redundant isHead method

src/main/java/org/littleshoot/proxy/impl/ClientToProxyConnection.java

@@ -428,7 +428,7 @@ void respond(ProxyToServerConnection serverConnection, HttpFilters filters,
             // if this HttpResponse does not have any means of signaling the end of the message body other than closing
             // the connection, convert the message to a "Transfer-Encoding: chunked" HTTP response. This avoids the need
             // to close the client connection to indicate the end of the message. (Responses to HEAD requests "must be" empty.)
-            if (!ProxyUtils.isHead(currentHttpRequest) && !ProxyUtils.isResponseSelfTerminating(httpResponse)) {
+            if (!ProxyUtils.isHEAD(currentHttpRequest) && !ProxyUtils.isResponseSelfTerminating(httpResponse)) {
                 // if this is not a FullHttpResponse,  duplicate the HttpResponse from the server before sending it to
                 // the client. this allows us to set the Transfer-Encoding to chunked without interfering with netty's
                 // handling of the response from the server. if we modify the original HttpResponse from the server,

src/main/java/org/littleshoot/proxy/impl/ProxyUtils.java

@@ -386,16 +386,6 @@ public static boolean isContentAlwaysEmpty(HttpMessage msg) {
         return false;
     }
 
-    /**
-     * Returns true if the request is an HTTP HEAD request.
-     *
-     * @param request HTTP request
-     * @return true if request is a HEAD, otherwise false
-     */
-    public static boolean isHead(HttpRequest request) {
-        return HttpMethod.HEAD.equals(request.getMethod());
-    }
-
     /**
      * Returns true if the HTTP response from the server is expected to indicate its own message length/end-of-message. Returns false
      * if the server is expected to indicate the end of the HTTP entity by closing the connection.