diff --git a/lib/util.js b/lib/util.js
index 003b5e5b54073b..b16692cccfb914 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -18,41 +18,6 @@ const inspectDefaultOptions = Object.seal({
 });
 
 var Debug;
-var simdFormatters;
-
-// SIMD is only available when --harmony_simd is specified on the command line
-// and the set of available types differs between v5 and v6, that's why we use
-// a map to look up and store the formatters.  It also provides a modicum of
-// protection against users monkey-patching the SIMD object.
-if (typeof global.SIMD === 'object' && global.SIMD !== null) {
-  simdFormatters = new Map();
-
-  const make =
-    (extractLane, count) => (ctx, value, recurseTimes, visibleKeys, keys) => {
-      const output = new Array(count);
-      for (var i = 0; i < count; i += 1)
-        output[i] = formatPrimitive(ctx, extractLane(value, i));
-      return output;
-    };
-
-  const countPerType = {
-    Bool16x8: 8,
-    Bool32x4: 4,
-    Bool8x16: 16,
-    Float32x4: 4,
-    Int16x8: 8,
-    Int32x4: 4,
-    Int8x16: 16,
-    Uint16x8: 8,
-    Uint32x4: 4,
-    Uint8x16: 16
-  };
-
-  for (const key in countPerType) {
-    const type = global.SIMD[key];
-    simdFormatters.set(type, make(type.extractLane, countPerType[key]));
-  }
-}
 
 function tryStringify(arg) {
   try {
@@ -508,7 +473,6 @@ function formatValue(ctx, value, recurseTimes) {
       braces = ['{', '}'];
       formatter = formatPromise;
     } else {
-      let maybeSimdFormatter;
       if (binding.isMapIterator(value)) {
         constructor = { name: 'MapIterator' };
         braces = ['{', '}'];
@@ -519,11 +483,6 @@ function formatValue(ctx, value, recurseTimes) {
         braces = ['{', '}'];
         empty = false;
         formatter = formatCollectionIterator;
-      } else if (simdFormatters &&
-                 typeof constructor === 'function' &&
-                 (maybeSimdFormatter = simdFormatters.get(constructor))) {
-        braces = ['[', ']'];
-        formatter = maybeSimdFormatter;
       } else {
         // Unset the constructor to prevent "Object {...}" for ordinary objects.
         if (constructor && constructor.name === 'Object')
diff --git a/test/parallel/test-util-inspect-simd.js b/test/parallel/test-util-inspect-simd.js
deleted file mode 100644
index 5e0a2740840c93..00000000000000
--- a/test/parallel/test-util-inspect-simd.js
+++ /dev/null
@@ -1,69 +0,0 @@
-// Flags: --harmony_simd
-/* global SIMD */
-'use strict';
-
-require('../common');
-const assert = require('assert');
-const inspect = require('util').inspect;
-
-assert.strictEqual(
-    inspect(SIMD.Bool16x8()),
-    'Bool16x8 [ false, false, false, false, false, false, false, false ]');
-
-assert.strictEqual(
-    inspect(SIMD.Bool32x4()),
-    'Bool32x4 [ false, false, false, false ]');
-
-assert.strictEqual(
-    inspect(SIMD.Bool8x16()),
-    'Bool8x16 [\n  false,\n  false,\n  false,\n  false,\n  false,\n' +
-    '  false,\n  false,\n  false,\n  false,\n  false,\n  false,\n' +
-    '  false,\n  false,\n  false,\n  false,\n  false ]');
-
-assert.strictEqual(
-    inspect(SIMD.Bool32x4()),
-    'Bool32x4 [ false, false, false, false ]');
-
-assert.strictEqual(
-    inspect(SIMD.Float32x4()),
-    'Float32x4 [ NaN, NaN, NaN, NaN ]');
-
-assert.strictEqual(
-    inspect(SIMD.Int16x8()),
-    'Int16x8 [ 0, 0, 0, 0, 0, 0, 0, 0 ]');
-
-assert.strictEqual(
-    inspect(SIMD.Int32x4()),
-    'Int32x4 [ 0, 0, 0, 0 ]');
-
-assert.strictEqual(
-    inspect(SIMD.Int8x16()),
-    'Int8x16 [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]');
-
-// The SIMD types below are not available in v5.
-if (typeof SIMD.Uint16x8 === 'function') {
-  assert.strictEqual(
-      inspect(SIMD.Uint16x8()),
-      'Uint16x8 [ 0, 0, 0, 0, 0, 0, 0, 0 ]');
-}
-
-if (typeof SIMD.Uint32x4 === 'function') {
-  assert.strictEqual(
-      inspect(SIMD.Uint32x4()),
-      'Uint32x4 [ 0, 0, 0, 0 ]');
-}
-
-if (typeof SIMD.Uint8x16 === 'function') {
-  assert.strictEqual(
-      inspect(SIMD.Uint8x16()),
-      'Uint8x16 [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]');
-}
-
-// Tests from test-inspect.js that should not fail with --harmony_simd.
-assert.strictEqual(inspect([]), '[]');
-assert.strictEqual(inspect([0]), '[ 0 ]');
-assert.strictEqual(inspect({}), '{}');
-assert.strictEqual(inspect({foo: 42}), '{ foo: 42 }');
-assert.strictEqual(inspect(null), 'null');
-assert.strictEqual(inspect(true), 'true');
-assert.strictEqual(inspect(false), 'false');