[Obvious][AArch64] arm_neon.h: Remove unnecessary forward declaration of vdup_n_f32

[Alan Lawrence]

Committed r222177 after testing on aarch64-none-linux-gnu and aarch64-none-elf.

gcc/ChangeLog:

        config/aarch64/arm_neon.h (vdup_n_f32): Remove forward declaration

diff --git a/gcc/config/aarch64/arm_neon.h b/gcc/config/aarch64/arm_neon.h
index 71ef027..e9cc825 100644
--- a/gcc/config/aarch64/arm_neon.h
+++ b/gcc/config/aarch64/arm_neon.h
@@ -5665,8 +5665,6 @@ vaddlvq_u32 (uint32x4_t a)

 /* vcvt_high_f32_f16 not supported */

-static float32x2_t vdup_n_f32 (float32_t);
-
 #define vcvt_n_f32_s32(a, b)                                            \
   __extension__                                                         \
     ({                                                                  \