Fix drone config

.drone.yml

@@ -12,11 +12,11 @@ steps:
 - name: Run
   image: golang
   commands:
-  - go get github.com/bwmarrin/discordgo
-  - go vet -v
-  - go build
   - ./Phasmobot -t $DISCORD_TOKEN
   secrets: [discord_token]
+  when:
+    branch:
+      - deploy
 
 - name: gitea_release
   image: plugins/gitea-release