Remove declarations of already-removed functions.

PiperOrigin-RevId: 295005912
Change-Id: I95df95e6165a6a521bb901eee091c48cbd76af04

tensorflow/lite/kernels/internal/optimized/neon_tensor_utils_impl.h

@@ -154,9 +154,6 @@ void NeonAsymmetricQuantizeFloats(const float* values, const int size,
                                   int8_t* quantized_values,
                                   float* scaling_factor, int32_t* offset);
 
-// Shift left a vector in place with v_size size.
-void NeonVectorShiftLeft(float* vector, int v_size, float shift_value);
-
 // Reduce-sum on a float input vector:
 // input_vector: float pointer to input vector.
 // output_vector: float pointer to vector.

tensorflow/lite/kernels/internal/reference/portable_tensor_utils_impl.h

@@ -169,9 +169,6 @@ void PortableVectorScalarMultiply(const int8_t* vector, int v_size, float scale,
 void PortableClipVector(const float* vector, int v_size, float abs_limit,
                         float* result);
 
-// Shift left a vector in place with v_size size.
-void PortableVectorShiftLeft(float* vector, int v_size, float shift_value);
-
 // Reduce-sum on a float input vector:
 // input_vector: float pointer to input vector.
 // output_vector: float pointer to vector.