multiboot1: don't mask the PIC when entering kernel
The spec states the PIC must left in the state the BIOS left it in.
diff --git a/stage23/protos/multiboot1.c b/stage23/protos/multiboot1.c
index 095acc56..4b32e565 100644
--- a/stage23/protos/multiboot1.c
+++ b/stage23/protos/multiboot1.c
@@ -248,7 +248,6 @@ __attribute__((noreturn)) void multiboot1_spinup_32(
__attribute__((noreturn)) void multiboot1_spinup(
uint32_t entry_point, uint32_t multiboot1_info) {
- pic_mask_all();
pic_flush();
#if defined (uefi)
