Remove the explicit Bigtable client version to use transitive version from Beam.
Remove the explicit Bigtable client version to use transitive version from Beam.

PiperOrigin-RevId: 473892855

GoogleCloudPlatform/DataflowTemplates,GoogleCloudPlatform/DataflowTemplates,GoogleCloudPlatform/DataflowTemplates,GoogleCloudPlatform/DataflowTemplates