Move plugin models to be alongside plugins, remove legacy Sagemaker, Pytorch, notebook, and Tensorflow plugins

[wild-endeavor]

TL;DR

Copy the model files for plugins into the microlib that uses them. We're copying instead of moving to support legacy use-cases, but the old definitions will be removed in 1.0. Removing sagemaker because it's not used.

Type

• Bug Fix
• Feature
• Plugin
• Cleanup

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Complete description

Delete.

[codecov]

Codecov Report

Merging #736 (71f8de0) into master (673e076) will decrease coverage by 0.14%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #736      +/-   ##
==========================================
- Coverage   85.74%   85.60%   -0.15%     
==========================================
  Files         362      341      -21     
  Lines       29996    28917    -1079     
  Branches     2444     2382      -62     
==========================================
- Hits        25721    24755     -966     
+ Misses       3632     3528     -104     
+ Partials      643      634       -9     

Impacted Files	Coverage Δ
flytekit/models/presto.py	80.00% <ø> (ø)
flytekit/models/qubole.py	96.36% <ø> (ø)
flytekit/models/task.py	92.00% <ø> (-0.13%)	⬇️
flytekit/plugins/__init__.py	100.00% <ø> (ø)
flytekit/sdk/tasks.py	76.19% <ø> (+0.43%)	⬆️
flytekit/common/interface.py	86.30% <0.00%> (-2.74%)	⬇️
flytekit/common/types/proto.py	75.88% <0.00%> (-2.13%)	⬇️
flytekit/engines/common.py	78.94% <0.00%> (-0.66%)	⬇️
flytekit/common/types/primitives.py	94.37% <0.00%> (-0.41%)	⬇️
...ker/flytekitplugins/awssagemaker/models/hpo_job.py
... and 5 more

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