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diff --git a/vendor/gonum.org/v1/gonum/internal/asm/f32/axpyunitaryto_amd64.s b/vendor/gonum.org/v1/gonum/internal/asm/f32/axpyunitaryto_amd64.s
deleted file mode 100644
index 0ed8a449..00000000
--- a/vendor/gonum.org/v1/gonum/internal/asm/f32/axpyunitaryto_amd64.s
+++ /dev/null
@@ -1,98 +0,0 @@
-// Copyright ©2016 The Gonum Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//+build !noasm,!appengine
-
-#include "textflag.h"
-
-// func AxpyUnitaryTo(dst []float32, alpha float32, x, y []float32)
-TEXT ·AxpyUnitaryTo(SB), NOSPLIT, $0
-	MOVQ    dst_base+0(FP), DI // DI = &dst
-	MOVQ    x_base+32(FP), SI  // SI = &x
-	MOVQ    y_base+56(FP), DX  // DX = &y
-	MOVQ    x_len+40(FP), BX   // BX = min( len(x), len(y), len(dst) )
-	CMPQ    y_len+64(FP), BX
-	CMOVQLE y_len+64(FP), BX
-	CMPQ    dst_len+8(FP), BX
-	CMOVQLE dst_len+8(FP), BX
-	CMPQ    BX, $0             // if BX == 0 { return }
-	JE      axpy_end
-	MOVSS   alpha+24(FP), X0
-	SHUFPS  $0, X0, X0         // X0 = { a, a, a, a, }
-	XORQ    AX, AX             // i = 0
-	MOVQ    DX, CX
-	ANDQ    $0xF, CX           // Align on 16-byte boundary for ADDPS
-	JZ      axpy_no_trim       // if CX == 0 { goto axpy_no_trim }
-
-	XORQ $0xF, CX // CX = 4 - floor ( B % 16 / 4 )
-	INCQ CX
-	SHRQ $2, CX
-
-axpy_align: // Trim first value(s) in unaligned buffer  do {
-	MOVSS (SI)(AX*4), X2 // X2 = x[i]
-	MULSS X0, X2         // X2 *= a
-	ADDSS (DX)(AX*4), X2 // X2 += y[i]
-	MOVSS X2, (DI)(AX*4) // y[i] = X2
-	INCQ  AX             // i++
-	DECQ  BX
-	JZ    axpy_end       // if --BX == 0 { return }
-	LOOP  axpy_align     // } while --CX > 0
-
-axpy_no_trim:
-	MOVUPS X0, X1           // Copy X0 to X1 for pipelining
-	MOVQ   BX, CX
-	ANDQ   $0xF, BX         // BX = len % 16
-	SHRQ   $4, CX           // CX = floor( len / 16 )
-	JZ     axpy_tail4_start // if CX == 0 { return }
-
-axpy_loop: // Loop unrolled 16x  do {
-	MOVUPS (SI)(AX*4), X2   // X2 = x[i:i+4]
-	MOVUPS 16(SI)(AX*4), X3
-	MOVUPS 32(SI)(AX*4), X4
-	MOVUPS 48(SI)(AX*4), X5
-	MULPS  X0, X2           // X2 *= a
-	MULPS  X1, X3
-	MULPS  X0, X4
-	MULPS  X1, X5
-	ADDPS  (DX)(AX*4), X2   // X2 += y[i:i+4]
-	ADDPS  16(DX)(AX*4), X3
-	ADDPS  32(DX)(AX*4), X4
-	ADDPS  48(DX)(AX*4), X5
-	MOVUPS X2, (DI)(AX*4)   // dst[i:i+4] = X2
-	MOVUPS X3, 16(DI)(AX*4)
-	MOVUPS X4, 32(DI)(AX*4)
-	MOVUPS X5, 48(DI)(AX*4)
-	ADDQ   $16, AX          // i += 16
-	LOOP   axpy_loop        // while (--CX) > 0
-	CMPQ   BX, $0           // if BX == 0 { return }
-	JE     axpy_end
-
-axpy_tail4_start: // Reset loop counter for 4-wide tail loop
-	MOVQ BX, CX          // CX = floor( BX / 4 )
-	SHRQ $2, CX
-	JZ   axpy_tail_start // if CX == 0 { goto axpy_tail_start }
-
-axpy_tail4: // Loop unrolled 4x  do {
-	MOVUPS (SI)(AX*4), X2 // X2 = x[i]
-	MULPS  X0, X2         // X2 *= a
-	ADDPS  (DX)(AX*4), X2 // X2 += y[i]
-	MOVUPS X2, (DI)(AX*4) // y[i] = X2
-	ADDQ   $4, AX         // i += 4
-	LOOP   axpy_tail4     // } while --CX > 0
-
-axpy_tail_start: // Reset loop counter for 1-wide tail loop
-	MOVQ BX, CX   // CX = BX % 4
-	ANDQ $3, CX
-	JZ   axpy_end // if CX == 0 { return }
-
-axpy_tail:
-	MOVSS (SI)(AX*4), X1 // X1 = x[i]
-	MULSS X0, X1         // X1 *= a
-	ADDSS (DX)(AX*4), X1 // X1 += y[i]
-	MOVSS X1, (DI)(AX*4) // y[i] = X1
-	INCQ  AX             // i++
-	LOOP  axpy_tail      // } while --CX > 0
-
-axpy_end:
-	RET