microblaze: Remove interrupt handler

The primary purpose for this code was timer. By converting it to
CONFIG_TIMER there is no code which uses this implementation that's why
remove it. If there is a need to handle interrupts this patch can be
reverted in future.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/5f2decc5a30a5678490ebde26d8c6f5a5f873cda.1654684731.git.michal.simek@amd.com
3 files changed