src: Remove unused consumer table in ConsumerDB

Change-Id: Ic65105c51fb65a1512b157a4148732946274d19a
Refs: #3573
diff --git a/src/consumer-db.cpp b/src/consumer-db.cpp
index bd707bf..e2898ac 100644
--- a/src/consumer-db.cpp
+++ b/src/consumer-db.cpp
@@ -38,11 +38,7 @@
   "    key_buf             BLOB NOT NULL              \n"
   "  );                                               \n"
   "CREATE UNIQUE INDEX IF NOT EXISTS                  \n"
-  "   KeyNameIndex ON decryptionkeys(key_name);       \n"
-  "CREATE TABLE IF NOT EXISTS                         \n"
-  "  consumer(                                        \n"
-  "    prefix              BLOB PRIMARY KEY           \n"
-  "  );                                               \n";
+  "   KeyNameIndex ON decryptionkeys(key_name);       \n";
 
 class ConsumerDB::Impl
 {