chore(lintstagedrc): remove no longer needed git add tasks

Author: simonmumenthaler

.lintstagedrc.yml

@@ -1,14 +1,11 @@
 "src/**/!(*.spec).ts":
   - prettier --write --config ./.prettierrc.yml
   - tslint --project ./tsconfig.json -t codeFrame --fix
-  - git add
 "(src/**/*.spec.ts|test/**/*.ts)":
   - prettier --write --config ./.prettierrc.yml
   # TODO LOW tslint will not work because of the following error
   # ✖ tslint --project ./tsconfig.jest.json -t codeFrame --fix found some errors. Please fix them and try committing again.
   #'/Users/michaelwittwer/dev/shiftcode/dynamo-easy/test/models/complex.model.ts' is not included in project.
   # - tslint --project ./tsconfig.jest.json -t codeFrame --fix
-  - git add
 "**/package.json":
   - sort-package-json
-  - git add