Merge pull request #3805 from backstage/blam/isomorphic-git

Remove the NodeGit Dependency in favour of isomorphic-git

packages/techdocs-common/package.json

@@ -51,7 +51,6 @@
     "js-yaml": "^3.14.0",
     "mime-types": "^2.1.27",
     "mock-fs": "^4.13.0",
-    "nodegit": "^0.27.0",
     "recursive-readdir": "^2.2.2",
     "winston": "^3.2.1"
   },
@@ -62,7 +61,6 @@
     "@types/js-yaml": "^3.12.5",
     "@types/mime-types": "^2.1.0",
     "@types/mock-fs": "^4.13.0",
-    "@types/nodegit": "^0.26.12",
     "@types/recursive-readdir": "^2.2.0"
   },
   "jest": {