chore(appveyor): cut unneeded build and test steps

Author: xen0n

appveyor.yml

@@ -29,11 +29,7 @@ test_script:
   # we don't run the "test phase" when doing deploys
   - if [%APPVEYOR_REPO_TAG%]==[false] (
       cargo build --target %TARGET% &&
-      cargo build --target %TARGET% --release &&
-      cargo test --target %TARGET% &&
-      cargo test --target %TARGET% --release &&
-      cargo run --target %TARGET% &&
-      cargo run --target %TARGET% --release
+      cargo test --target %TARGET%
     )
 
 before_deploy: