Don't load samples from firebase (they will be added via direct calls to the api)

Provide a mechanism to clear out all the samples - should remove this or protect it at some point.

communicator/api.yml

@@ -63,6 +63,14 @@ paths:
                 type: array
                 items:
                   $ref: "#/components/schemas/Sample"
+    delete:
+      operationId: communicator.api.admin.clear_samples
+      summary: Removes the given samples completely.
+      tags:
+        - Studies
+      responses:
+        '204':
+          description: All Samples removed.
 components:
   schemas:
     Status:

communicator/api/admin.py

@@ -20,14 +20,16 @@ def add_sample(body):
     db.session.add(sample)
     db.session.commit()
 
+def clear_samples():
+    db.session.query(Sample).delete()
+    db.session.commit()
+
 def update_data():
-    """Updates the database based on local files placed by IVY and records
-    read in from the firecloud database."""
-    fb_service = FirebaseService()
+    """Updates the database based on local files placed by IVY.  No longer attempts
+    to pull files from the Firebase service."""
     ivy_service = IvyService()
 
-    samples = fb_service.get_samples()
-    samples.extend(ivy_service.load_directory())
+    samples = ivy_service.load_directory()
     SampleService().add_or_update_records(samples)
     db.session.commit()