Removed primary key from message ZFO table.

src/sqlite/db_tables.cpp

@@ -360,7 +360,6 @@ namespace MsgZfoTbl {
 	const QString tabName("message_zfos");
 
 	const QVector< QPair<QString, enum EntryType> > knownAttrs = {
-	{"id", DB_INTEGER}, /* NOT NULL*/
 	{"dmID",  DB_INTEGER}, /* NOT NULL*/
 	{"testEnv", DB_BOOLEAN},
 	{"lastAccessTime", DB_INTEGER},
@@ -373,13 +372,11 @@ namespace MsgZfoTbl {
 	};
 
 	const QMap<QString, QString> colConstraints = {
-	    {"id", "NOT NULL"},
 	    {"dmID", "NOT NULL"}
 	};
 
 	const QString &tblConstraint(
 	    ",\n"
-	    "        PRIMARY KEY (id),\n"
 	    "        CHECK (testEnv IN (0, 1)),\n"
 	    "        FOREIGN KEY(dmID) REFERENCES messages (dmID)"
 	);