chore: remove deprecated api /superset/override_role_permissions

[dpgaspar]

SUMMARY

Removes old deprecated API /superset/override_role_permissions/

Related with the ongoing effort for removing deprecated APIs from /superset: #24332

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #24334 (c5dde0b) into master (af8f725) will decrease coverage by 11.11%.
The diff coverage is n/a.

❗ Current head c5dde0b differs from pull request most recent head 2823b9f. Consider uploading reports for the commit 2823b9f to get more accurate results

@@             Coverage Diff             @@
##           master   #24334       +/-   ##
===========================================
- Coverage   69.08%   57.97%   -11.11%     
===========================================
  Files        1905     1905               
  Lines       74849    74823       -26     
  Branches     8108     8108               
===========================================
- Hits        51706    43380     -8326     
- Misses      21031    29331     +8300     
  Partials     2112     2112               

Flag	Coverage Δ
hive	53.69% <ø> (+0.02%)	⬆️
mysql	?
postgres	?
presto	53.62% <ø> (+0.02%)	⬆️
python	60.46% <ø> (-22.81%)	⬇️
sqlite	?
unit	54.11% <ø> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
superset/views/core.py	36.82% <ø> (-38.46%)	⬇️

... and 302 files with indirect coverage changes

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[michael-s-molina]

Could you add something to Breaking Changes in UPDATING.md?

[dpgaspar]

closed in favour of #24266