Remove python constraints in cutreamz and cudf_kafka recipes (#10052)

Python constraints should not be set in `meta.yaml` file as  python version is specified during conda build using the `--python` flag

Authors:
  - Jordan Jacobelli (https://github.com/Ethyling)

Approvers:
  - AJ Schmidt (https://github.com/ajschmidt8)

URL: #10052

conda/recipes/cudf_kafka/meta.yaml

@@ -27,13 +27,13 @@ requirements:
   build:
     - cmake >=3.20.1
   host:
-    - python {{ py_version }}
+    - python
     - cython >=0.29,<0.30
     - cudf {{ version }}
     - libcudf_kafka {{ version }}
     - setuptools
   run:
-    - python {{ py_version }}
+    - python
     - libcudf_kafka {{ version }}
     - python-confluent-kafka >=1.7.0,<1.8.0a0=py{{ py_version_numeric }}*
     - cudf {{ version }}

conda/recipes/custreamz/meta.yaml

@@ -25,11 +25,11 @@ build:
 
 requirements:
   host:
-    - python {{ py_version }}
+    - python
     - python-confluent-kafka >=1.7.0,<1.8.0a0=py{{ py_version_numeric }}*
     - cudf_kafka {{ version }}
   run:
-    - python {{ py_version }}
+    - python
     - streamz
     - cudf {{ version }}
     - dask>=2021.11.1,<=2021.11.2