Remove add/change file provider with json fragment

[AndersAstrand]

These seem to have been overlooked in
75aad06 when similar functions for kmip and vault were removed.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.51%. Comparing base (27d05dd) to head (4765c1a).

❌ Your project status has failed because the head coverage (85.51%) is below the target coverage (90.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@                  Coverage Diff                  @@
##           TDE_REL_17_STABLE     #405      +/-   ##
=====================================================
- Coverage              85.55%   85.51%   -0.04%     
=====================================================
  Files                     22       22              
  Lines                   2547     2547              
  Branches                 388      388              
=====================================================
- Hits                    2179     2178       -1     
- Misses                   292      293       +1     
  Partials                  76       76              

Components	Coverage Δ
access	83.73% <ø> (ø)
catalog	88.90% <ø> (ø)
common	91.80% <ø> (ø)
encryption	72.56% <ø> (-0.89%)	⬇️
keyring	72.94% <ø> (ø)
src	91.42% <ø> (ø)
smgr	94.85% <ø> (ø)
transam	∅ <ø> (∅)

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