Remove the unused babel-plugin-istanbul devDependency. (#30066)

package-lock.json

@@ -1147,24 +1147,6 @@
         "to-fast-properties": "^2.0.0"
       }
     },
-    "@istanbuljs/load-nyc-config": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@istanbuljs/load-nyc-config/-/load-nyc-config-1.0.0.tgz",
-      "integrity": "sha512-ZR0rq/f/E4f4XcgnDvtMWXCUJpi8eO0rssVhmztsZqLIEFA9UUP9zmpE0VxlM+kv/E1ul2I876Fwil2ayptDVg==",
-      "dev": true,
-      "requires": {
-        "camelcase": "^5.3.1",
-        "find-up": "^4.1.0",
-        "js-yaml": "^3.13.1",
-        "resolve-from": "^5.0.0"
-      }
-    },
-    "@istanbuljs/schema": {
-      "version": "0.1.2",
-      "resolved": "https://registry.npmjs.org/@istanbuljs/schema/-/schema-0.1.2.tgz",
-      "integrity": "sha512-tsAQNx32a8CoFhjhijUIhI4kccIAgmGhy8LZMZgGfmXcpMbPRUqn5LWmgRttILi6yeGmBJd2xsPkFMs0PzgPCw==",
-      "dev": true
-    },
     "@nodelib/fs.scandir": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.3.tgz",
@@ -1854,19 +1836,6 @@
         "object.assign": "^4.1.0"
       }
     },
-    "babel-plugin-istanbul": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/babel-plugin-istanbul/-/babel-plugin-istanbul-6.0.0.tgz",
-      "integrity": "sha512-AF55rZXpe7trmEylbaE1Gv54wn6rwU03aptvRoVIGP8YykoSxqdVLV1TfwflBCE/QtHmqtP8SWlTENqbK8GCSQ==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@istanbuljs/load-nyc-config": "^1.0.0",
-        "@istanbuljs/schema": "^0.1.2",
-        "istanbul-lib-instrument": "^4.0.0",
-        "test-exclude": "^6.0.0"
-      }
-    },
     "babel-runtime": {
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.26.0.tgz",
@@ -7157,12 +7126,6 @@
         }
       }
     },
-    "istanbul-lib-coverage": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.0.0.tgz",
-      "integrity": "sha512-UiUIqxMgRDET6eR+o5HbfRYP1l0hqkWOs7vNxC/mggutCMUIhWMm8gAHb8tHlyfD3/l6rlgNA5cKdDzEAf6hEg==",
-      "dev": true
-    },
     "istanbul-lib-hook": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/istanbul-lib-hook/-/istanbul-lib-hook-2.0.7.tgz",
@@ -7172,29 +7135,6 @@
         "append-transform": "^1.0.0"
       }
     },
-    "istanbul-lib-instrument": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/istanbul-lib-instrument/-/istanbul-lib-instrument-4.0.0.tgz",
-      "integrity": "sha512-Nm4wVHdo7ZXSG30KjZ2Wl5SU/Bw7bDx1PdaiIFzEStdjs0H12mOTncn1GVYuqQSaZxpg87VGBRsVRPGD2cD1AQ==",
-      "dev": true,
-      "requires": {
-        "@babel/core": "^7.7.5",
-        "@babel/parser": "^7.7.5",
-        "@babel/template": "^7.7.4",
-        "@babel/traverse": "^7.7.4",
-        "@istanbuljs/schema": "^0.1.2",
-        "istanbul-lib-coverage": "^3.0.0",
-        "semver": "^6.3.0"
-      },
-      "dependencies": {
-        "semver": {
-          "version": "6.3.0",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
-          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==",
-          "dev": true
-        }
-      }
-    },
     "istanbul-lib-report": {
       "version": "2.0.8",
       "resolved": "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-2.0.8.tgz",
@@ -13195,17 +13135,6 @@
         }
       }
     },
-    "test-exclude": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-6.0.0.tgz",
-      "integrity": "sha512-cAGWPIyOHU6zlmg88jwm7VRyXnMN7iV68OGAbYDk/Mh/xC/pzVPlQtY6ngoIH/5/tciuhGfvESU8GrHrcxD56w==",
-      "dev": true,
-      "requires": {
-        "@istanbuljs/schema": "^0.1.2",
-        "glob": "^7.1.4",
-        "minimatch": "^3.0.4"
-      }
-    },
     "text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",

package.json

@@ -99,7 +99,6 @@
     "@rollup/plugin-node-resolve": "^7.0.0",
     "autoprefixer": "^9.7.4",
     "babel-eslint": "^10.0.3",
-    "babel-plugin-istanbul": "^6.0.0",
     "bundlesize": "^0.18.0",
     "clean-css-cli": "^4.3.0",
     "cross-env": "^7.0.0",