Remove dead code
Remove dead code

refs INTEROP-7064
flag=none

Test plan
- Smoke test LTI tool creation
  and make sure everything
  looks ok

Change-Id: I61a2c275122c73f44178117e2d343c2c1948a0cd
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/284152
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
Reviewed-by: Evan Battaglia <e557ffdfc4b80aab44858030b0ae5370b86cb7b1@instructure.com>
QA-Review: Xander Moffatt <27f70fe194da423604e6e0a63a3de19814736fa9@instructure.com>
Product-Review: Mysti Lilla <431d062aff1e8f25416b3a7b732fe6effdb03f9a@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms