Remove shx. (#29636)

* the `release-zip` script is using `zip` which means chances are one is on msys2 or *nix
* we don't run the `coveralls` script locally at all

package-lock.json

@@ -3553,12 +3553,6 @@
         "is-symbol": "^1.0.2"
       }
     },
-    "es6-object-assign": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/es6-object-assign/-/es6-object-assign-1.1.0.tgz",
-      "integrity": "sha1-wsNYJlYkfDnqEHyx5mUrb58kUjw=",
-      "dev": true
-    },
     "es6-promise": {
       "version": "4.2.8",
       "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.8.tgz",
@@ -10692,17 +10686,6 @@
         "rechoir": "^0.6.2"
       }
     },
-    "shx": {
-      "version": "0.3.2",
-      "resolved": "https://registry.npmjs.org/shx/-/shx-0.3.2.tgz",
-      "integrity": "sha512-aS0mWtW3T2sHAenrSrip2XGv39O9dXIFUqxAEWHEOS1ePtGIBavdPJY1kE2IHl14V/4iCbUiNDPGdyYTtmhSoA==",
-      "dev": true,
-      "requires": {
-        "es6-object-assign": "^1.0.3",
-        "minimist": "^1.2.0",
-        "shelljs": "^0.8.1"
-      }
-    },
     "signal-exit": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",