core: don't add redundant brackets

jadx-samples/src/main/java/jadx/samples/AbstractTest.java

@@ -36,4 +36,8 @@ public abstract class AbstractTest {
 			throw new AssertionError(a1 + " != " + a2);
 		}
 	}
+
+	public static void fail() {
+		throw new AssertionError();
+	}
 }

jadx-samples/src/main/java/jadx/samples/TestTypeResolver2.java

@@ -22,13 +22,11 @@ public class TestTypeResolver2 extends AbstractTest {
 	}
 
 	private static void doPrint(String s1) {
-		// incorrect call
-		assertTrue(false);
+		fail();
 	}
 
 	private static void doPrint(Integer s1) {
-		// incorrect call
-		assertTrue(false);
+		fail();
 	}
 
 	private static void doPrint(Object s1) {