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diff --git a/vendor/gonum.org/v1/gonum/internal/asm/c128/dscalinc_amd64.s b/vendor/gonum.org/v1/gonum/internal/asm/c128/dscalinc_amd64.s
deleted file mode 100644
index 78ee18a8..00000000
--- a/vendor/gonum.org/v1/gonum/internal/asm/c128/dscalinc_amd64.s
+++ /dev/null
@@ -1,69 +0,0 @@
-// Copyright ©2017 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"
-
-#define SRC SI
-#define DST SI
-#define LEN CX
-#define TAIL BX
-#define INC R9
-#define INC3 R10
-#define ALPHA X0
-#define ALPHA_2 X1
-
-#define MOVDDUP_ALPHA    LONG $0x44120FF2; WORD $0x0824 // MOVDDUP 8(SP), X0
-
-// func DscalInc(alpha float64, x []complex128, n, inc uintptr)
-TEXT ·DscalInc(SB), NOSPLIT, $0
-	MOVQ x_base+8(FP), SRC // SRC = &x
-	MOVQ n+32(FP), LEN     // LEN = n
-	CMPQ LEN, $0           // if LEN == 0 { return }
-	JE   dscal_end
-
-	MOVDDUP_ALPHA             // ALPHA = alpha
-	MOVQ   inc+40(FP), INC    // INC = inc
-	SHLQ   $4, INC            // INC = INC * sizeof(complex128)
-	LEAQ   (INC)(INC*2), INC3 // INC3 = 3 * INC
-	MOVUPS ALPHA, ALPHA_2     // Copy ALPHA and ALPHA_2 for pipelining
-	MOVQ   LEN, TAIL          // TAIL = LEN
-	SHRQ   $2, LEN            // LEN = floor( n / 4 )
-	JZ     dscal_tail         // if LEN == 0 { goto dscal_tail }
-
-dscal_loop: // do {
-	MOVUPS (SRC), X2         // X_i = x[i]
-	MOVUPS (SRC)(INC*1), X3
-	MOVUPS (SRC)(INC*2), X4
-	MOVUPS (SRC)(INC3*1), X5
-
-	MULPD ALPHA, X2   // X_i *= ALPHA
-	MULPD ALPHA_2, X3
-	MULPD ALPHA, X4
-	MULPD ALPHA_2, X5
-
-	MOVUPS X2, (DST)         // x[i] = X_i
-	MOVUPS X3, (DST)(INC*1)
-	MOVUPS X4, (DST)(INC*2)
-	MOVUPS X5, (DST)(INC3*1)
-
-	LEAQ (SRC)(INC*4), SRC // SRC += INC*4
-	DECQ LEN
-	JNZ  dscal_loop        // } while --LEN > 0
-
-dscal_tail:
-	ANDQ $3, TAIL  // TAIL = TAIL % 4
-	JE   dscal_end // if TAIL == 0 { return }
-
-dscal_tail_loop: // do {
-	MOVUPS (SRC), X2       // X_i = x[i]
-	MULPD  ALPHA, X2       // X_i *= ALPHA
-	MOVUPS X2, (DST)       // x[i] = X_i
-	ADDQ   INC, SRC        // SRC += INC
-	DECQ   TAIL
-	JNZ    dscal_tail_loop // } while --TAIL > 0
-
-dscal_end:
-	RET