chore: remove deprecated apis /slice_json/ and /annotation_json/

[dpgaspar]

SUMMARY

Removes old deprecated APIs:

• /superset/slice_json/...
• /superset/annotation_json/...

Effort on 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 #24423 (10a11d6) into master (23bb1c4) will increase coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 10a11d6 differs from pull request most recent head 59ca5f7. Consider uploading reports for the commit 59ca5f7 to get more accurate results

@@            Coverage Diff             @@
##           master   #24423      +/-   ##
==========================================
+ Coverage   68.91%   68.93%   +0.01%     
==========================================
  Files        1904     1904              
  Lines       73920    73879      -41     
  Branches     8119     8119              
==========================================
- Hits        50944    50929      -15     
+ Misses      20865    20839      -26     
  Partials     2111     2111              

Flag	Coverage Δ
hive	53.94% <100.00%> (+0.02%)	⬆️
mysql	79.25% <100.00%> (+0.04%)	⬆️
postgres	79.34% <100.00%> (+0.04%)	⬆️
presto	53.87% <100.00%> (+0.01%)	⬆️
python	83.33% <100.00%> (+0.05%)	⬆️
sqlite	77.84% <100.00%> (+0.04%)	⬆️
unit	54.64% <100.00%> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
superset/views/utils.py	83.13% <ø> (+2.14%)	⬆️
superset/views/core.py	70.34% <100.00%> (+1.67%)	⬆️

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[michael-s-molina]

LGTM