chore: remove unused path resolver

Author: jeffbcross

src/utils/absolute_path_resolver.spec.ts

@@ -15,7 +15,6 @@
   "files": [
     "src/angularfire2.ts",
     "src/angularfire2.spec.ts",
-    "src/utils/absolute_path_resolver.ts",
     "src/utils/firebase_list_factory.spec.ts",
     "src/utils/firebase_object_factory.ts",
     "src/utils/firebase_object_factory.spec.ts",

src/utils/absolute_path_resolver.ts

@@ -14,8 +14,6 @@
   },
   "files": [
     "src/angularfire2.ts",
-    "src/utils/absolute_path_resolver.ts",
-    "src/utils/firebase_object_factory.ts",
     "typings/main.d.ts"
   ]
 }