refactor: remove unneeded globby and marked from devDependencies

Though required by other deps, these packages are not currently needed as devDeps or peerDeps

Author: brettz9

package.json

@@ -28,9 +28,7 @@
     "eslint-config-canonical": "^17.1.1",
     "gitdown": "^2.6.1",
     "glob": "^7.1.4",
-    "globby": "^9.2.0",
     "husky": "^2.7.0",
-    "marked": "^0.6.2",
     "mocha": "^6.1.4",
     "nyc": "^14.1.1",
     "semantic-release": "^15.13.18",