Remove deprecated Husky call

When committing, I saw the following output:

```
husky - DEPRECATED

Please remove the following lines from your hook scripts:

. "$(dirname -- "$0")/_/husky.sh"

They WILL FAIL in v10.0.0
```

.husky/pre-commit

@@ -1,4 +1 @@
-#!/usr/bin/env sh
-. "$(dirname -- "$0")/_/husky.sh"
-
 npx lint-staged