IVGCVSW-4237 Solve build dependencies to allow isolated build on sbuild
IVGCVSW-4237 Solve build dependencies to allow isolated build on sbuild

 * Remove FindBoost search for libboost-log which caused unnecessary dependency.

Signed-off-by: Francis Murtagh <e59f6df1240b2b6c2b05aa682b1b9d01b9505720@arm.com>
Change-Id: I58e30ca8ca76106ef08ddc782c462e96ddb211cf

ARM-software/armnn,ARM-software/armnn,ARM-software/armnn