remove useless string allocation

src/main.rs

@@ -55,8 +55,7 @@ fn parse_args() -> Cli {
     // running with cargo vcs causes the vcs arg to be sent along
     // we need to unhack this for Clap
     let mut all_args: Vec<OsString> = std::env::args_os().collect();
-    let vcsstr = String::from("vcs");
-    let osvcsstr = OsString::from(vcsstr);
+    let osvcsstr = OsString::from("vcs");
     if all_args.get(1) == Some(&osvcsstr) {
         all_args.remove(1);
     }