s390/fpu: remove TIF_FPU

#define TIF_PATCH_PENDING	5	/* pending live patching update */

#define TIF_PGSTE		6	/* New mm's will use 4K page tables */

#define TIF_NOTIFY_SIGNAL	7	/* signal notifications exist */

#define TIF_FPU			8	/* restore FPU registers on exit to usermode */

#define TIF_ISOLATE_BP_GUEST	9	/* Run KVM guests with isolated BP */

#define TIF_PER_TRAP		10	/* Need to handle PER trap on exit to usermode */

#define _TIF_UPROBE		BIT(TIF_UPROBE)

#define _TIF_GUARDED_STORAGE	BIT(TIF_GUARDED_STORAGE)

#define _TIF_PATCH_PENDING	BIT(TIF_PATCH_PENDING)

#define _TIF_FPU		BIT(TIF_FPU)

#define _TIF_ISOLATE_BP_GUEST	BIT(TIF_ISOLATE_BP_GUEST)

#define _TIF_PER_TRAP		BIT(TIF_PER_TRAP)