SPARK-3639 | Removed settings master in examples

This patch removes setting of master as local in Kinesis examples so that users can set it using submit-job.

Author: aniketbhatnagar <aniket.bhatnagar@gmail.com>

Closes #2536 from aniketbhatnagar/Kinesis-Examples-Master-Unset and squashes the following commits:

c9723ac [aniketbhatnagar] Merge remote-tracking branch 'origin/Kinesis-Examples-Master-Unset' into Kinesis-Examples-Master-Unset
fec8ead [aniketbhatnagar] SPARK-3639 | Removed settings master in examples
31cdc59 [aniketbhatnagar] SPARK-3639 | Removed settings master in examples