[feat] Remove the --force-local option

[vkarak]

Users should use -S local=1 instead.

Closes #2629.

[codecov-commenter]

Codecov Report

Base: 86.59% // Head: 86.60% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (568e550) compared to base (7fcfe46).
Patch has no changes to coverable lines.

❗ Current head 568e550 differs from pull request most recent head f37ec48. Consider uploading reports for the commit f37ec48 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2710      +/-   ##
==========================================
+ Coverage   86.59%   86.60%   +0.01%     
==========================================
  Files          60       60              
  Lines       11223    11192      -31     
==========================================
- Hits         9718     9693      -25     
+ Misses       1505     1499       -6     

Impacted Files	Coverage Δ
reframe/frontend/cli.py	73.71% <ø> (-0.13%)	⬇️
reframe/frontend/executors/__init__.py	97.66% <ø> (-0.02%)	⬇️
reframe/core/logging.py	80.87% <0.00%> (-0.08%)	⬇️
reframe/frontend/executors/policies.py	92.50% <0.00%> (-0.03%)	⬇️
reframe/core/pipeline.py	93.23% <0.00%> (-0.01%)	⬇️
reframe/frontend/argparse.py	92.75% <0.00%> (+1.02%)	⬆️
reframe/utility/typecheck.py	97.31% <0.00%> (+2.45%)	⬆️

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