Remove unnecessary dropCollection function. Make it opt-in for Lesion Tracker testing

LesionTracker/server/dropAllCollections.js

@@ -1,18 +1,16 @@
 // Temporary fix to drop all Collections on server restart
 // http://stackoverflow.com/questions/23891631/meteor-how-can-i-drop-all-mongo-collections-and-clear-all-data-on-startup
 Meteor.startup(() => {
-    if (!Meteor.settings.dropCollections) {
-        return;
-    }
-
-    console.warn('Dropping all global Collections!');
-    Object.keys(global).forEach((key) => {
-        const object = global[key];
-        if (object instanceof Meteor.Collection) {
-            if (!(/^server|currentServer$/).test(object._name)) {
-                console.warn(`Dropping: ${object._debugName || object._name}`);
-                object.remove({});
+    if (Meteor.settings.dropCollections === true) {
+        console.warn('Dropping all global Collections!');
+        Object.keys(global).forEach((key) => {
+            const object = global[key];
+            if (object instanceof Meteor.Collection) {
+                if (!(/^server|currentServer$/).test(object._name)) {
+                    console.warn(`Dropping: ${object._debugName || object._name}`);
+                    object.remove({});
+                }
             }
-        }
-    });
+        });
+    }
 });