Revert "msm: camera: icp: Add Power Collapse"

This reverts commit 78093d36.
Any subsequent Open system call after first successful call to ICP driver
fails because of first Close system call failed due to fw_download flag.
The fw_download flag should be set to TRUE after successful FW download in
Open system call. Since by default this flag is FALSE, first Close system
call failed.

Change-Id: I35cb3b9ab0d54b6364610d79445eceaa35a94f09
Signed-off-by: Soundrapandian Jeyaprakash <jsoundra@codeaurora.org>