[test] Remove dumb test - not valid now as class is static and should not have been instantiated

Author: hazendaz

src/test/java/org/apache/ibatis/io/ResourcesTest.java

@@ -170,8 +170,4 @@ void shouldGetReaderWithClassLoader() throws IOException {
 
   }
 
-  @Test
-  void stupidJustForCoverage() {
-    assertNotNull(new Resources());
-  }
 }