Since its QOM'ification in commit 368a354f ("pflash_cfi0x:
QOMified") the pflash_cfi01_register() function does not fail.

This call was later converted with a script to use &error_fatal,
still unable to fail. Remove the unreachable code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230109115316.2235-14-philmd@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>