addressing @squirrelo comments

Author: antgonza

qiita_db/metadata_template/base_metadata_template.py

@@ -771,11 +771,7 @@ def delete(cls, id_):
 
         conn_handler.add_to_queue(
             queue,
-            "DROP TABLE IF EXISTS qiita.{0}".format(table_name))
-
-        conn_handler.add_to_queue(
-            queue,
-            "DROP TABLE IF EXISTS qiita.{0}".format(table_name))
+            "DROP TABLE qiita.{0}".format(table_name))
 
         conn_handler.add_to_queue(
             queue,

qiita_pet/handlers/study_handlers/description_handlers.py

@@ -661,8 +661,8 @@ def delete_sample_template(self, study, user, callback):
                    "<b><i>%s</i></b>" % (sample_template_id, study.title))
             msg_level = "success"
         except Exception as e:
-            msg = "Couldn't remove %d raw data: %s" % (sample_template_id,
-                                                       str(e))
+            msg = "Couldn't remove %d sample template: %s" % (
+                sample_template_id, str(e))
             msg_level = "danger"
 
         callback((msg, msg_level, 'study_information_tab', None, None))