Remove unused methods

Author: leonardehrenfried

street/src/main/java/org/opentripplanner/street/search/state/State.java

@@ -360,16 +360,6 @@ public String getVehicleRentalNetwork() {
     return stateData.vehicleRentalNetwork;
   }
 
-  /**
-   * Whether we know or don't know the rental network (yet).
-   * <p>
-   * When doing a arriveBy search it is possible to be in a renting state without knowing which
-   * network it is.
-   */
-  public boolean unknownRentalNetwork() {
-    return stateData.vehicleRentalNetwork == null;
-  }
-
   /**
    * Reverse the path implicit in the given state, the path will be reversed but will have the same
    * duration. This is the result of combining the functions from GraphPath optimize and reverse.