[ruby/net-http] Prevent warnings

```
/home/chkbuild/chkbuild/tmp/build/20240913T003003Z/ruby/test/net/http/utils.rb:32: warning: assigned but unused variable - e
/home/chkbuild/chkbuild/tmp/build/20240913T003003Z/ruby/test/net/http/utils.rb:61: warning: assigned but unused variable - version
/home/chkbuild/chkbuild/tmp/build/20240913T003003Z/ruby/test/net/http/utils.rb:124: warning: method redefined; discarding old query
```

https://github.com/ruby/net-http/commit/6f818346ce

test/net/http/utils.rb

@@ -29,7 +29,7 @@ module TestNetHTTPUtils
         loop do
           socket = @ssl_server ? @ssl_server.accept : @server.accept
           run(socket)
-        rescue => e
+        rescue
         ensure
           socket.close if socket
         end
@@ -58,7 +58,7 @@ module TestNetHTTPUtils
       request_line = socket.gets
       return if request_line.nil? || request_line.strip.empty?
 
-      method, path, version = request_line.split
+      method, path, _version = request_line.split
       headers = {}
       while (line = socket.gets)
         break if line.strip.empty?
@@ -121,10 +121,6 @@ module TestNetHTTPUtils
         @socket.write "HTTP\/1.1 100 continue\r\n\r\n"
       end
 
-      def query
-        @query
-      end
-
       def remote_ip
         @socket.peeraddr[3]
       end