Remove vestigial feature declaration and pre-seed known hosts for deploy

.gitea/workflows/deploy.yaml

@@ -11,6 +11,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
+      - name: Pre-seed known_hosts
+        run: ssh-keyscan -t rsa badgey >> ~/.ssh/known_hosts
       - name: Build (Release)
         run: cargo build --release --color=always
       - name: Deploy

src/main.rs

@@ -1,5 +1,3 @@
-#![feature(string_remove_matches)]
-
 #[macro_use] extern crate log;
 
 pub mod badgey;