remove no use snapshots and fix npm prepublish

__tests__/__snapshots__/PullToRefresh.spec.tsx.snap

-// Jest Snapshot v1, https://goo.gl/fbAQLP
-
-exports[`PullToRefresh spec App shows PullToRefresh 1`] = `
-<div
-  style={
-    Object {
-      "WebkitOverflowScrolling": "touch",
-      "backgroundColor": "white",
-      "height": "auto",
-      "overflow": "hidden",
-      "position": "relative",
-      "zIndex": 1,
-    }
-  }
->
-  <div
-    style={
-      Object {
-        "left": 0,
-        "overflow": "hidden",
-        "position": "absolute",
-        "right": 0,
-        "top": 0,
-      }
-    }
-  >
-    <div>
-      Pull Down
-    </div>
-  </div>
-  <div
-    style={
-      Object {
-        "WebkitOverflowScrolling": "touch",
-        "backgroundColor": "white",
-        "height": "auto",
-        "overflow": "hidden",
-        "position": "relative",
-        "zIndex": 1,
-      }
-    }
-  >
-    <div>
-      Test
-    </div>
-  </div>
-</div>
-`;

package.json

@@ -10,7 +10,7 @@
     "clean": "rimraf dist",
     "tsc": "npm run clean && tsc -p .",
     "test": "rimraf dist && npm run lint && jest --config=jestconfig.json",
-    "prepublish": "npm run tsc && npm test"
+    "prepublish": "npm test && npm run tsc"
   },
   "repository": {
     "type": "git",