kernel: remove old TODOs

kernel-src/arch/x86-64/cpu.c

@@ -46,7 +46,6 @@ void cpu_initstate() {
 	unsigned int eax = 0,ebx = 0,ecx = 0,edx = 0;
 	__get_cpuid(0x80000001, &eax, &ebx, &ecx, &edx);
 
-	// TODO in the future, have an alternative way of handling syscalls
 	__assert(edx & CPUID_SYSCALL);
 	uint64_t efer = rdmsr(MSR_EFER);
 	efer |= EFER_SYSCALLENABLE;

kernel-src/fs/vfs.c

@@ -790,7 +790,6 @@ int vfs_lookup(vnode_t **result, vnode_t *start, char *path, char *lastcomp, int
 				VOP_HOLD(derefstart);
 			}
 
-			// TODO possible deadlock when input vnode is locked and the vfs_lookup would lock it
 			error = vfs_lookup(&derefresult, derefstart, linkderef, NULL, pass);
 
 			if (*linkderef == '/')