fix(rules): removed case rule

Author: lemon-mario

README.md

@@ -3,6 +3,7 @@
 All you need to start your typescript project:
 - tsconfig.json
 - tslint.json
+- jest.config.js
 
 Credits:
 [ryansmith94](https://github.com/ryansmith94)

configs/tslint.json

@@ -122,7 +122,6 @@
     "completed-docs": [false],
     "encoding": true,
     "file-header": [false],
-    "file-name-casing": [true, { ".tsx": "pascal-case", ".ts": "camel-case" }],
     "import-spacing": true,
     "increment-decrement": true,
     "interface-name": [true, "never-prefix"],