Use LiquidsReflectometer Stitching Utilities

[ktactac]

Description of work:

Previous work moved stitching functionality to lrred. This PR makes use of lrred utilities and retires refred utilities.

Check all that apply:

• Source added/refactored
• Added unit tests
• Added integration tests
• Verified that tests requiring the /SNS and /HFIR filesystems pass without fail
• updated documentation and checked that it looks correct in the pull request preview

References:

• Links to IBM EWM items: 13787: [RefRed] Use automatic stitching in lr_reduction
• Links to related issues or pull requests: Add scaling factor calculation for norm and stitching LiquidsReflectometer#99

⚠️ Manual test for the reviewer

(instructions to set up the environment)

Check list for the reviewer

• best software practices
  • clearly named variables (better to be verbose in variable names)
  • code comments explaining the intent of code blocks
• All the tests are passing
• The documentation is up to date and looks correct in the pull request preview
• code comments added when explaining intent

[codecov-commenter]

Codecov Report

❌ Patch coverage is 88.88889% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.96%. Comparing base (6285870) to head (f9f6bf8).

Files with missing lines	Patch %	Lines
src/refred/reduction/normalization_stitching.py	88.88%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             next     #219      +/-   ##
==========================================
- Coverage   69.21%   68.96%   -0.26%     
==========================================
  Files         119      118       -1     
  Lines       10019     9928      -91     
==========================================
- Hits         6935     6847      -88     
+ Misses       3084     3081       -3     

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