fix cargo clippy command in fix.sh

[daschw]

Running ./fix.sh errors with

+ echo 'Running clippy linter and applying available fixes'
Running clippy linter and applying available fixes
+ cargo clippy --fix --allow-dirty -W clippy::pedantic -W clippy::pedantic -W clippy::correctness -W clippy::suspicious
error: unexpected argument '-W' found

This fixes it and removes a duplicate line.

[NotAShelf]

oops