feat(semantic-release): remove semantic-release script

This is redundant since we can run `yarn semantic-release` without declaring a script. It's also
confusing since developers might think that the `yarn semantic-release` script is intended to be run
manually.

package.json

@@ -17,7 +17,6 @@
     "fix": "tsc --noEmit && eslint . --fix && prettier --write .",
     "lint": "tsc --noEmit && eslint . && prettier --check .",
     "prepare": "husky install && tsc",
-    "semantic-release": "semantic-release",
     "test": "ava"
   },
   "engines": {