Remove unused method .value()

[Jasopaum]

Description

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Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.

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Fixes # (issue)

Type of change

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• Added/Modified tutorials
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have added tests for my changes
• I did follow the contribution guidelines
• I have commented my code following Google style.

[codecov]

Codecov Report

Merging #3418 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           master    #3418    +/-   ##
========================================
  Coverage   94.71%   94.72%            
========================================
  Files         152      152            
  Lines       16148    16044   -104     
========================================
- Hits        15295    15197    -98     
+ Misses        853      847     -6     

Impacted Files	Coverage Δ
syft/execution/communication.py	96.07% <ø> (ø)
...ft/frameworks/torch/tensors/interpreters/native.py	91.07% <ø> (+0.18%)	⬆️
syft/generic/pointers/pointer_tensor.py	92.73% <ø> (+1.48%)	⬆️
syft/execution/state.py	88.54% <0.00%> (-1.09%)	⬇️
syft/workers/base.py	92.62% <0.00%> (-0.02%)	⬇️
test/execution/test_plan.py	100.00% <0.00%> (ø)
test/execution/test_state.py	100.00% <0.00%> (ø)
syft/execution/plan.py	93.65% <0.00%> (+0.05%)	⬆️
syft/execution/tracing.py	94.44% <0.00%> (+0.15%)	⬆️
syft/execution/role.py	99.46% <0.00%> (+0.98%)	⬆️

[Prtfw]

LGTM! 🎉