removed not required button

lib/configuration.dart

@@ -94,7 +94,7 @@ class _MyHomePageState extends State<Configuration> {
           children: <Widget>[
             const Text(
                 'You must be online to do something here!',
-                style: TextStyle(fontSize: 18)
+                style: TextStyle(fontSize: 14)
             ),
             const SizedBox(height: 50),
             FutureBuilder<List<Collection>>(
@@ -139,16 +139,8 @@ class _MyHomePageState extends State<Configuration> {
         ),
       ),
       bottomNavigationBar: Row(
-        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+        mainAxisAlignment: MainAxisAlignment.end,
         children: [
-          FloatingActionButton.extended(
-            heroTag: null,
-            tooltip: 'Request Collections from sensor.awi.de',
-            icon: const Icon(Icons.download),
-            label: const Text("Get Collections"),
-            onPressed: () {
-            },
-          ),
           FloatingActionButton.extended(
             heroTag: null,
             tooltip: 'Select Collection and download corresponding devices',