x86/fpu: Remove unused get_xsave_field_ptr()

					     u64 xstate_mask);

void *get_xsave_addr(struct xregs_state *xsave, int xfeature_nr);

const void *get_xsave_field_ptr(int xfeature_nr);

int using_compacted_format(void);

int xfeature_size(int xfeature_nr);

struct membuf;

}

EXPORT_SYMBOL_GPL(get_xsave_addr);

/*

 * This wraps up the common operations that need to occur when retrieving

 * data from xsave state.  It first ensures that the current task was

 * using the FPU and retrieves the data in to a buffer.  It then calculates

 * the offset of the requested field in the buffer.

 *

 * This function is safe to call whether the FPU is in use or not.

 *

 * Note that this only works on the current task.

 *

 * Inputs:

 *	@xfeature_nr: state which is defined in xsave.h (e.g. XFEATURE_FP,

 *	XFEATURE_SSE, etc...)

 * Output:

 *	address of the state in the xsave area or NULL if the state

 *	is not present or is in its 'init state'.

 */

const void *get_xsave_field_ptr(int xfeature_nr)

{

	struct fpu *fpu = &current->thread.fpu;

	/*

	 * fpu__save() takes the CPU's xstate registers

	 * and saves them off to the 'fpu memory buffer.

	 */

	fpu__save(fpu);

	return get_xsave_addr(&fpu->state.xsave, xfeature_nr);

}

#ifdef CONFIG_ARCH_HAS_PKEYS

/*