Remove test done for test purposes

t/my-echo-test.t

-use Test::Nginx::Socket 'no_plan';
-
-run_tests();
-
-__DATA__
-
-=== TEST 1: hello, world
-This is just a simple demonstration of the echo directive provided by ngx_http_echo_module.
---- main_config
-load_module /etc/nginx/modules/ngx_http_voms_module.so;
-load_module /etc/nginx/modules/ngx_http_echo_module.so;
---- config
-location = /hello {
-    echo "hello, world!";
-}
---- request
-GET /hello
---- response_body
-hello, world!
---- error_code: 200

t/my-simple-test.t

-
-use Test::Nginx::Socket 'no_plan';
-
-run_tests();
-
-__DATA__
-
-=== TEST 1: hello world
-
---- config
-location = /hello {
-    return 200 "hello world\n";
-}
-
---- request
-GET /hello
-
---- response_body
-hello world