Remove an extra layer of wrapping for matchers/custom matchers

Helps reduce how nested custom matchers have to be for users as well as
Jasmine internal matchers

[#59161378]

src/core/matchers/toBeLessThan.js

@@ -1,14 +1,11 @@
 getJasmineRequireObj().toBeLessThan = function() {
   function toBeLessThan() {
-    return {
-
-      compare: function(actual, expected) {
-        return {
-          pass: actual < expected
-        };
-      }
+    return function(actual, expected) {
+      return {
+        pass: actual < expected
+      };
     };
   }
 
   return toBeLessThan;
-};
+};