Model file usage optimized

- Remove a redundant COLLADA file https://github.com/130s/rtmros_nextage/commit/49a284eac4cc63e1da5424ecfdfa57a98cf77c01
- VRML location on QNX is now separated from Hironx (https://github.com/tork-a/delivery/issues/127). ***NOTE***: with this change, robot owners MUST update the model location inside QNX.
  - We might need to add an option to keep using the same model file location inside QNX for the users who are not willing to update files in QNX. Right now I just can't think of a good idea to implement this.