fix(post_processing): remove indices from csv output

[cemremengu]

SUMMARY

This PR removes the pseudo range index added in post_processing when converting to csv.

When sending reports as csv or inline text, this id is also included. I believe it does not add any value to output however if it is somehow useful, it is better to include it either via query or make it optional.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

BEFORE:

AFTER:

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 #19735 (11d1bbf) into master (b7759e6) will increase coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master   #19735      +/-   ##
==========================================
+ Coverage   66.48%   66.51%   +0.02%     
==========================================
  Files        1686     1686              
  Lines       64588    64585       -3     
  Branches     6636     6636              
==========================================
+ Hits        42942    42958      +16     
+ Misses      19947    19928      -19     
  Partials     1699     1699              

Flag	Coverage Δ
hive	52.70% <0.00%> (+<0.01%)	⬆️
mysql	81.96% <0.00%> (+<0.01%)	⬆️
postgres	82.01% <0.00%> (?)
presto	52.54% <0.00%> (+<0.01%)	⬆️
python	82.43% <0.00%> (+0.05%)	⬆️
sqlite	81.77% <0.00%> (+<0.01%)	⬆️
unit	47.76% <0.00%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
superset/charts/post_processing.py	68.75% <0.00%> (+1.57%)	⬆️
superset/reports/commands/execute.py	91.51% <0.00%> (+0.36%)	⬆️
superset/views/base_api.py	98.31% <0.00%> (+0.42%)	⬆️
superset/common/query_object.py	95.26% <0.00%> (+0.52%)	⬆️
superset/commands/importers/v1/utils.py	93.50% <0.00%> (+1.29%)	⬆️
superset/db_engine_specs/postgres.py	97.27% <0.00%> (+1.81%)	⬆️
superset/reports/commands/log_prune.py	89.28% <0.00%> (+3.57%)	⬆️
superset/sql_validators/postgres.py	100.00% <0.00%> (+50.00%)	⬆️

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