arch: powerpc: kvm: book3s_pr.c: Remove unused function

Remove the function get_fpr_index() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index cf2eb16..f5738394 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -644,11 +644,6 @@
 	return r;
 }
 
-static inline int get_fpr_index(int i)
-{
-	return i * TS_FPRWIDTH;
-}
-
 /* Give up external provider (FPU, Altivec, VSX) */
 void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr)
 {