Revert "Allows use <params> in parsers defined steps"

[olegpidsadnyi]

Reverts #433

[codecov]

Codecov Report

Merging #440 (f75a57b) into master (0590b7b) will decrease coverage by 0.48%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #440      +/-   ##
==========================================
- Coverage   96.20%   95.72%   -0.49%     
==========================================
  Files          50       50              
  Lines        1715     1684      -31     
  Branches      161      159       -2     
==========================================
- Hits         1650     1612      -38     
- Misses         38       42       +4     
- Partials       27       30       +3     

Impacted Files	Coverage Δ
tests/feature/test_parametrized.py	100.00% <ø> (ø)
pytest_bdd/parser.py	99.55% <100.00%> (ø)
pytest_bdd/scenario.py	92.54% <100.00%> (-0.23%)	⬇️
tests/feature/test_outline.py	100.00% <100.00%> (ø)
tests/utils.py	66.66% <0.00%> (-33.34%)	⬇️
tests/conftest.py	77.77% <0.00%> (-22.23%)	⬇️
tests/feature/test_tags.py	96.15% <0.00%> (-3.85%)	⬇️

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