chore(lintstaged): remove git add

It's no longer necessary to add changes explicitly.

Author: Thomaash

.lintstagedrc

@@ -1,3 +1,3 @@
 {
-  "{src,test}/*.{j,t}s": ["eslint --fix", "git add"]
+  "{src,test}/*.{j,t}s": ["eslint --fix"]
 }