Fix tests: "infix modifier required" and "operator modifier required" errors

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/FunctionTest.java

@@ -147,10 +147,6 @@ public class FunctionTest extends AbstractExpressionTest {
         checkFooBoxIsOk();
     }
 
-    public void testInfixCall() throws Exception {
-        checkFooBoxIsOk();
-    }
-
     public void testLambdaOrLocalFunInsideEnumMethod() throws Exception {
         checkFooBoxIsOk();
     }

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/InvokeConventionTest.java

@@ -54,10 +54,6 @@ public final class InvokeConventionTest extends AbstractExpressionTest {
         fooBoxTest();
     }
 
-    public void testInfixCall() throws Exception {
-        checkFooBoxIsOk();
-    }
-
     public void testInheritFromFunctionTraits() throws Exception {
         checkFooBoxIsOk();
     }