Simplify custreamz and cudf_kafka recipes files

[jjacobelli]

Adding build string constraints with Python version is not required for python-confluent-kafka dependency as the python version is fixed during conda build with --python flag

[jjacobelli]

@gpucibot merge

[jjacobelli]

rerun tests

[codecov]

Codecov Report

Merging #10065 (2938546) into branch-22.02 (967a333) will decrease coverage by 0.08%.
The diff coverage is n/a.

❗ Current head 2938546 differs from pull request most recent head 2bbf85b. Consider uploading reports for the commit 2bbf85b to get more accurate results

@@               Coverage Diff                @@
##           branch-22.02   #10065      +/-   ##
================================================
- Coverage         10.49%   10.40%   -0.09%     
================================================
  Files               119      119              
  Lines             20305    20556     +251     
================================================
+ Hits               2130     2139       +9     
- Misses            18175    18417     +242     

Impacted Files	Coverage Δ
python/custreamz/custreamz/kafka.py	29.16% <0.00%> (-0.63%)	⬇️
python/dask_cudf/dask_cudf/sorting.py	92.66% <0.00%> (-0.25%)	⬇️
python/dask_cudf/dask_cudf/core.py	70.85% <0.00%> (-0.17%)	⬇️
python/cudf/cudf/__init__.py	0.00% <0.00%> (ø)
python/cudf/cudf/api/types.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/frame.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/index.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/parquet.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/dtypes.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/scalar.py	0.00% <0.00%> (ø)
... and 31 more

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[ajschmidt8]

rerun tests

[galipremsagar]

rerun tests

[galipremsagar]

rerun tests