Revert "Bump timeouts for tests involving FKs/interleaved dependenceis"

[Abacn]

Reverts #2239

[Abacn]

actually the test the original PR touched did not affect Java PR, only affects Spanner PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.90%. Comparing base (721c95f) to head (62751b9).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2258      +/-   ##
============================================
+ Coverage     48.82%   53.90%   +5.07%     
+ Complexity     4511     1695    -2816     
============================================
  Files           905      423     -482     
  Lines         55061    23478   -31583     
  Branches       5881     2367    -3514     
============================================
- Hits          26886    12655   -14231     
+ Misses        26254    10088   -16166     
+ Partials       1921      735    -1186     

Components	Coverage Δ
spanner-templates	71.03% <ø> (+1.22%)	⬆️
spanner-import-export	∅ <ø> (∅)
spanner-live-forward-migration	77.64% <ø> (ø)
spanner-live-reverse-replication	79.69% <ø> (ø)
spanner-bulk-migration	88.39% <ø> (ø)

see 499 files with indirect coverage changes

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