staging: wilc1000: remove the macro WILC_ERRORCHECK

This patch removes the macro WILC_ERRORCHECK which is not used
anymore by replacing it with the plain statements.

This patch also removes the WILC_CATCH macros from some of functions not
to make the build warnings.

Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Tony Cho <tony.cho@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>