Java: Remove some redundant string concatenations

Author: igfoo

java/ql/src/Likely Bugs/Cloning/MissingCallToSuperClone.ql

@@ -20,5 +20,5 @@ where
   c.fromSource() and
   exists(sc.getBody()) and
   not exists(CloneMethod ssc | sc.callsSuper(ssc))
-select sc, "This clone method does not call super.clone(), but is " + "overridden and called $@.",
-  c, "in a subclass"
+select sc, "This clone method does not call super.clone(), but is overridden and called $@.", c,
+  "in a subclass"

java/ql/src/Likely Bugs/Likely Typos/ConstructorTypo.ql

@@ -17,4 +17,4 @@ from Method m
 where
   m.hasName(m.getDeclaringType().getName()) and
   m.fromSource()
-select m, "This method has the same name as its declaring class." + " Should it be a constructor?"
+select m, "This method has the same name as its declaring class. Should it be a constructor?"