LibJS: Uncomment the tests that pass now

Author: https://github.com/Cleverking2003
Commit: 1dbd264239
Pull-request: https://github.com/SerenityOS/serenity/pull/4622
Issue: https://github.com/SerenityOS/serenity/issues/4543

Libraries/LibJS/Tests/builtins/Math/Math.log1p.js

@@ -3,6 +3,6 @@ test("basic functionality", () => {
 
     expect(Math.log1p(-2)).toBeNaN();
     expect(Math.log1p(-1)).toBe(-Infinity);
-    // FIXME: expect(Math.log1p(0)).toBe(0);
-    // FIXME: expect(Math.log1p(1)).toBeCloseTo(0.693147);
+    expect(Math.log1p(0)).toBe(0);
+    expect(Math.log1p(1)).toBeCloseTo(0.693147);
 });