SQL: remove outdated \since tags

There is no need to know if a function was added in Qt4 or earlier so
remove all \since 4.x tags

Change-Id: I5cf4e89a3e30c13fac076f1ae7abb33a625e366c
Reviewed-by: Kai Köhne <kai.koehne@qt.io>

src/sql/kernel/qsqldatabase.cpp

@@ -1281,8 +1281,6 @@ QSqlDatabase QSqlDatabase::cloneDatabase(const QString &other, const QString &co
 }
 
 /*!
-    \since 4.4
-
     Returns the connection name, which may be empty.  \note The
     connection name is not the \l{databaseName()} {database name}.
 

src/sql/kernel/qsqldriver.cpp

@@ -404,7 +404,6 @@ bool QSqlDriver::isIdentifierEscaped(const QString &identifier, IdentifierType t
     Reimplement this function if you want to provide your own implementation in your
     QSqlDriver subclass,
 
-    \since 4.5
     \sa isIdentifierEscaped()
  */
 QString QSqlDriver::stripDelimiters(const QString &identifier, IdentifierType type) const
@@ -680,7 +679,6 @@ QVariant QSqlDriver::handle() const
     Reimplement this function if you want to provide event notification support in your
     own QSqlDriver subclass,
 
-    \since 4.4
     \sa unsubscribeFromNotification(), subscribedToNotifications(), QSqlDriver::hasFeature()
 */
 bool QSqlDriver::subscribeToNotification(const QString &name)
@@ -704,7 +702,6 @@ bool QSqlDriver::subscribeToNotification(const QString &name)
     Reimplement this function if you want to provide event notification support in your
     own QSqlDriver subclass,
 
-    \since 4.4
     \sa subscribeToNotification(), subscribedToNotifications()
 */
 bool QSqlDriver::unsubscribeFromNotification(const QString &name)
@@ -719,7 +716,6 @@ bool QSqlDriver::unsubscribeFromNotification(const QString &name)
     Reimplement this function if you want to provide event notification support in your
     own QSqlDriver subclass,
 
-    \since 4.4
     \sa subscribeToNotification(), unsubscribeFromNotification()
 */
 QStringList QSqlDriver::subscribedToNotifications() const

src/sql/kernel/qsqlquery.cpp

@@ -1043,8 +1043,6 @@ bool QSqlQuery::exec()
 */
 
 /*!
-    \since 4.2
-
   Executes a previously prepared SQL query in a batch. All the bound
   parameters have to be lists of variants. If the database doesn't
   support batch executions, the driver will simulate it using
@@ -1315,8 +1313,6 @@ bool QSqlQuery::isPositionalBindingEnabled() const
 
 
 /*!
-  \since 4.3.2
-
   Instruct the database driver that no more data will be fetched from
   this query until it is re-executed. There is normally no need to
   call this function, but it may be helpful in order to free resources
@@ -1338,8 +1334,6 @@ void QSqlQuery::finish()
 }
 
 /*!
-  \since 4.4
-
   Discards the current result set and navigates to the next if available.
 
   Some databases are capable of returning multiple result sets for

src/sql/kernel/qsqlresult.cpp

@@ -946,8 +946,6 @@ void QSqlResult::virtual_hook(int, void *)
 }
 
 /*! \internal
-    \since 4.2
-
     Executes a prepared query in batch mode if the driver supports it,
     otherwise emulates a batch execution using bindValue() and exec().
     QSqlDriver::hasFeature() can be used to find out whether a driver

src/sql/models/qsqlquerymodel.cpp

@@ -139,8 +139,6 @@ QSqlQueryModel::~QSqlQueryModel()
 }
 
 /*!
-    \since 4.1
-
     Fetches more rows from a database.
     This only affects databases that don't report back the size of a query
     (see QSqlDriver::hasFeature()).
@@ -162,8 +160,6 @@ void QSqlQueryModel::fetchMore(const QModelIndex &parent)
 }
 
 /*!
-    \since 4.1
-
     Returns \c true if it is possible to read more rows from the database.
     This only affects databases that don't report back the size of a query
     (see QSqlDriver::hasFeature()).
@@ -295,7 +291,6 @@ void QSqlQueryModel::endResetModel()
 }
 
 /*! \fn int QSqlQueryModel::rowCount(const QModelIndex &parent) const
-    \since 4.1
 
     If the database supports returning the size of a query
     (see QSqlDriver::hasFeature()), the number of rows of the current
@@ -388,8 +383,6 @@ void QSqlQueryModel::queryChange()
 /*!
     \deprecated [6.2] Use the \c{setQuery(QSqlQuery &&query)} overload instead.
     \overload
-    \since 4.5
-
 */
 void QSqlQueryModel::setQuery(const QSqlQuery &query)
 {

src/sql/models/qsqlrelationaltablemodel.cpp

@@ -644,7 +644,6 @@ void QSqlRelationalTableModel::clear()
     \value LeftJoin - Left join mode, returns all rows from the left table (table_name1), even if there are no matches in the right table (table_name2).
 
     \sa QSqlRelationalTableModel::setJoinMode()
-    \since 4.8
 */
 
 /*!
@@ -653,7 +652,6 @@ void QSqlRelationalTableModel::clear()
     LeftJoin mode if you want to show them.
 
     \sa QSqlRelationalTableModel::JoinMode
-    \since 4.8
 */
 void QSqlRelationalTableModel::setJoinMode( QSqlRelationalTableModel::JoinMode joinMode )
 {