Revert "firmware_class: Add an additional path to fw_path list"

This reverts commit 3e47c536248f ("firmware_class: Add an
additional path to fw_path list").

Adding /firmware/images entry in fw_path is introducing selinux
denials as the access was happening under the client process
context. Removing the entry from fw_path structure.

Change-Id: I359f8defe49595a7e53558992080cb94eba42451
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>