video: tegra: host : remove unused variable

video: tegra: host : remove unused variable

Fix coverity issues
1. Pointer "pdata" returned by "platform_get_drvdata(pdev)" is never used.
Coverity defect fix : 28405

2. Logically dead code (DEADCODE)
Coverity defect fix : 28403

Bug 1416640

Change-Id: I9d4cf410521c0076a708e72dc6b3a931b50b14dd
Signed-off-by: Shridhar Rasal <srasal@nvidia.com>
Reviewed-on: http://git-master/r/653989
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>