Remove repeated branches

Removes repeated branches in if/else if/else chains,consecutive
repeated branches in switch statements and identical true and
false branches in conditional operators. This also helps in
clang-tidy checks.

Change-Id: Ia9c27163ae07054fdceb65c14fea13052c5160a4
Signed-off-by: Pavithra Barithaya <pavithra.b@ibm.com>