test: remove duplicate annotation

jme3-core/src/test/java/com/jme3/material/MaterialMatParamOverrideTest.java

@@ -126,7 +126,6 @@ public class MaterialMatParamOverrideTest {
         outUniforms(uniform("AlphaDiscardThreshold", VarType.Float, 2.79f));
     }
 
-    @Test
     @Test
     public void testChildOverridesParent() {
         material("Common/MatDefs/Light/Lighting.j3md");