Removed the "typescript/definitions" element of package.json because …

…it is strongly argumented against.

http://angularclass.com/the-state-of-typescript-packages/
"TSD has a concept called tsd link, which references the type definition (typescript.definition in package.json) from the tsd.d.ts file in typings/. That means the TypeScript definition in your module needs to be ambient and can’t just be the output from the TypeScript compiler. This kind of concept resulted in more hacks and tools as dts-generator, which takes the TypeScript compiler .d.ts files and wraps them in your modules name so other tools can use them."

DefinitelyTyped/tsd#269

package.json

@@ -5,11 +5,6 @@
   "main": "dist/dexie.js",
   "jsnext:main": "dist/dexie.es6.js",
   "typings": "dist/dexie.d.ts",
-  "typescript": {
-    "definitions": [
-      "dist/dexie.d.ts"
-    ]
-  },
   "jspm": {
     "main": "dist/dexie.es6.js",
     "format": "esm"