chore: remove unnecessary custom definitions

Author: JounQin

Diff for: package.json

@@ -59,8 +59,10 @@
     "@types/cross-spawn": "^6.0.0",
     "@types/fs-extra": "^9.0.0",
     "@types/jest": "^24.0.11",
+    "@types/klaw-sync": "^6.0.5",
     "@types/minimist": "^1.2.2",
     "@types/node": "^12.0.0",
+    "@types/randomstring": "^1.3.0",
     "@types/rimraf": "^2.0.2",
     "@types/semver": "^7.5.0",
     "@types/tmp": "^0.0.34",

Diff for: typings/klaw-sync.d.ts

@@ -806,6 +806,13 @@
   dependencies:
     "@types/node" "*"
 
+"@types/klaw-sync@^6.0.5":
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/@types/klaw-sync/-/klaw-sync-6.0.5.tgz#0a87fa0762673a1a1d2e7b08a51d5d65f0c842cd"
+  integrity sha512-xlavCRyu5ibDjsOc7PSgeUbwOBZdnJsND8gFUVfBilplbBIWhLZVjwtqbZq0327ny3jNt7oviEh5NS9a4LudeQ==
+  dependencies:
+    "@types/node" "*"
+
 "@types/minimatch@^5.1.2":
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-5.1.2.tgz#07508b45797cb81ec3f273011b054cd0755eddca"
@@ -838,6 +845,11 @@
   resolved "https://registry.yarnpkg.com/@types/parse-json/-/parse-json-4.0.2.tgz#5950e50960793055845e956c427fc2b0d70c5239"
   integrity sha512-dISoDXWWQwUquiKsyZ4Ng+HX2KsPL7LyHKHQwgGFEA3IaKac4Obd+h2a/a6waisAoepJlBcx9paWqjA8/HVjCw==
 
+"@types/randomstring@^1.3.0":
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/@types/randomstring/-/randomstring-1.3.0.tgz#2953e8de350c27c10eb1aa011fbca8d88c327d79"
+  integrity sha512-kCP61wludjY7oNUeFiMxfswHB3Wn/aC03Cu82oQsNTO6OCuhVN/rCbBs68Cq6Nkgjmp2Sh3Js6HearJPkk7KQA==
+
 "@types/responselike@^1.0.0":
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/@types/responselike/-/responselike-1.0.3.tgz#cc29706f0a397cfe6df89debfe4bf5cea159db50"