Enforce UTF-8 encoding when creating databases

We use InnoDB everywhere, so there should be no issues with long unicode
keys. Dropped charset parameter for recreate_database since it's not
needed anymore.

Change-Id: Ib768402a9337c918309030a92ab81da17269f4f6
diff --git a/lib/trove b/lib/trove
index d889b05..e0a3831 100644
--- a/lib/trove
+++ b/lib/trove
@@ -201,7 +201,7 @@
 # init_trove() - Initializes Trove Database as a Service
 function init_trove {
     # (Re)Create trove db
-    recreate_database trove utf8
+    recreate_database trove
 
     # Initialize the trove database
     $TROVE_BIN_DIR/trove-manage db_sync