chore: remove example key

examples/basic.html

@@ -34,7 +34,7 @@
         white-space: nowrap;
       }
     </style>
-    <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE"></script>
+    <script src="https://maps.googleapis.com/maps/api/js"></script>
     <script src="../dist/index.dev.js"></script>
     <script>
       function initMap() {

examples/events.html

@@ -32,7 +32,7 @@
         white-space: nowrap;
       }
     </style>
-    <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE"></script>
+    <script src="https://maps.googleapis.com/maps/api/js"></script>
     <script src="../dist/index.dev.js"></script>
     <script>
       function initMap() {

examples/lettered.html

@@ -30,7 +30,7 @@
         white-space: nowrap;
       }
     </style>
-    <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE"></script>
+    <script src="https://maps.googleapis.com/maps/api/js"></script>
     <script src="../dist/index.dev.js"></script>
     <script>
       var marker;

examples/picturelabel.html

@@ -24,7 +24,7 @@
         width: 100px;
       }
     </style>
-    <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE&callback=initMap&v=beta"></script>
+    <script src="https://maps.googleapis.com/maps/api/js?callback=initMap&v=beta"></script>
     <script src="../dist/index.dev.js"></script>
     <script>
       var marker, pictureLabel;