[9.0.0 Release Deprecation] Remove deprecated Struts 1 pointcuts

[obenkenobi]

Overview

Do not merge until after January 1 and the next targeted release is 9.0.0.

Deprecates the Struts 1 instrumentation.

This is a copy of Jason's PR to merge into main:

#1644

Related Github Issue

#1628

[Newrelic-Boomi]

https://new-relic.atlassian.net/browse/NR-485556

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.35%. Comparing base (ae73a3d) to head (a6b0267).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2561      +/-   ##
============================================
+ Coverage     70.29%   70.35%   +0.05%     
+ Complexity    10120    10117       -3     
============================================
  Files           855      853       -2     
  Lines         41108    41063      -45     
  Branches       6230     6223       -7     
============================================
- Hits          28898    28891       -7     
+ Misses         9397     9358      -39     
- Partials       2813     2814       +1     

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