To the best of my understanding, these occurrences of the
`-Wunused-but-set` warnings do not reveal any underlying issues, so we
can safely remove these variables. There are more occurrences of this
warning in other places (not touched by this commit) that require
further analysis.
Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>
Remove unused variables throughout the code base and enable the
`-Wunused-variable` warning flag globally to prevent new unused
variable issues being introduced in the future.
This is mostly a non-functional change, with one exception:
- In `test_conformance/api/test_kernel_arg_info.cpp`, an error check
of the clGetDeviceInfo return value was added.
Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>
