[fix:httpProcess] Remove unused configurations from plugins.

[lahmXu]

Remove the unused configurations of the Request, paramMapping, and modifyResponse plugin, because this configuration is not used in the corresponding plugin code.

Make sure that:

• You have read the contribution guidelines.
• You submit test cases (unit or integration tests) that back your changes.
• Your local test passed ./mvnw clean install -Dmaven.javadoc.skip=true.

[codecov-commenter]

Codecov Report

Merging #4882 (f0d6ff4) into master (9314ac1) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4882      +/-   ##
============================================
- Coverage     64.48%   64.47%   -0.02%     
+ Complexity     8244     8243       -1     
============================================
  Files          1166     1166              
  Lines         34232    34232              
  Branches       3067     3067              
============================================
- Hits          22076    22070       -6     
- Misses        10397    10405       +8     
+ Partials       1759     1757       -2     

see 3 files with indirect coverage changes

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