delete unsupported v1 support

[dhalperi]

Stack:

• CI: upgrade to java 17 #913
• CI: add 3.13 to matrix #912
• pybatfish: delete everything deprecated #911
• delete unsupported v1 support #910 ⬅

⚠️ Part of a stack created by spr. Do not merge manually using the UI - doing so may have unexpected results.

[batfish-bot]

This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.00%. Comparing base (3e97f77) to head (902ab7b).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #910      +/-   ##
==========================================
+ Coverage   85.73%   87.00%   +1.26%     
==========================================
  Files          25       24       -1     
  Lines        3758     3654     -104     
  Branches      795      770      -25     
==========================================
- Hits         3222     3179      -43     
+ Misses        390      339      -51     
+ Partials      146      136      -10     

Files	Coverage Δ
pybatfish/client/internal.py	78.94% <100.00%> (+9.38%)	⬆️
pybatfish/client/session.py	81.10% <100.00%> (+3.52%)	⬆️
pybatfish/client/workhelper.py	69.18% <100.00%> (+3.80%)	⬆️

[progwriter]

Reviewed 11 of 11 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @ratulm)