Remove log noise written on the common path

Implement analogous functionality in the `logHandler` if you care about
this information.  That middleware can at least be toggled on and off.

main.go

@@ -99,7 +99,6 @@ func checkAuthorizationHeader(handler http.Handler, r *http.Request, w http.Resp
 	}
 
 	if auth_header[0:6] == "Basic " {
-		log.Println("Received request with basic auth creds")
 		b_creds, _ := base64.StdEncoding.DecodeString(auth_header[6:])
 		creds := string(b_creds)
 		if creds == config.BasicAuth {
@@ -110,7 +109,6 @@ func checkAuthorizationHeader(handler http.Handler, r *http.Request, w http.Resp
 			username := creds[0:colon_idx]
 			r.Header.Set(config.UsernameHeader, username)
 			r.Header.Del("Authorization")
-			log.Printf("Accepted basic auth creds for %s\n", username)
 			handler.ServeHTTP(w, r)
 			return true
 		} else {