Remove unused gcsfs dependency (#14962)

(cherry picked from commit be7bfdb)

Author: carmocca

requirements/pytorch/check-avail-extras.py

@@ -1,4 +1,3 @@
-# import gcsfs
 import hydra  # noqa: F401
 import jsonargparse  # noqa: F401
 import matplotlib  # noqa: F401

requirements/pytorch/extra.txt

@@ -5,7 +5,6 @@
 matplotlib>3.1, <3.5.3
 omegaconf>=2.0.5, <2.3.0
 hydra-core>=1.0.5, <1.3.0
-jsonargparse[signatures]>=4.12.0, <=4.12.0
-gcsfs>=2021.5.0, <2022.8.0
+jsonargparse[signatures]>=4.12.0, <4.14.0
 rich>=10.14.0, !=10.15.0.a, <13.0.0
 protobuf<=3.20.1 # strict  # an extra is updating protobuf, this pin prevents TensorBoard failure