Remove code referencing Vertica and delete deprecated jobs.

[bmedx]

Analytics Pipeline Pull Request

Make sure that the following steps are done before merging:

• [ ] If you have a migration please contact data engineering team before merging.
• [ ] Before merging run full acceptance tests suite and provide URL for the acceptance tests run.
• [ ] A member of data engineering team has approved the pull request.

[codecov[bot]]

Codecov Report

Merging #857 (13affcf) into master (a6ce64d) will increase coverage by 1.58%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #857      +/-   ##
==========================================
+ Coverage   74.71%   76.29%   +1.58%     
==========================================
  Files         203      152      -51     
  Lines       23261    17257    -6004     
==========================================
- Hits        17379    13166    -4213     
+ Misses       5882     4091    -1791     

Impacted Files	Coverage Δ
edx/analytics/tasks/common/sqoop.py	91.66% <ø> (-0.41%)	:arrow_down:
edx/analytics/tasks/insights/enrollments.py	77.15% <ø> (ø)
edx/analytics/tasks/util/record.py	80.48% <ø> (+1.25%)	:arrow_up:
.../tasks/warehouse/load_google_sheet_to_warehouse.py	48.27% <ø> (+1.87%)	:arrow_up:
...arehouse/load_internal_reporting_course_catalog.py	46.42% <ø> (-4.80%)	:arrow_down:
...asks/warehouse/load_internal_reporting_database.py	37.70% <ø> (-15.08%)	:arrow_down:
edx/analytics/tasks/common/tests/test_sqoop.py	100.00% <100.00%> (+0.52%)	:arrow_up:
edx/analytics/tasks/tests/acceptance/__init__.py	27.44% <100.00%> (-0.95%)	:arrow_down:
... and 1 more

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