Doc: Removed pages from "qt-sql" group.

-"qt-sql" removed in qtdoc
-no longer needed because "Data Storage" and Qt SQL pages already serve
as the main introduction to SQL support in Qt

Change-Id: I7384ae04ab4c09ecc9d76668e4e7f836095066c1
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>

src/sql/doc/src/qsqldatatype-table.qdoc

@@ -30,8 +30,6 @@
   \title Data Types for Qt-supported Database Systems
   \brief Recommended data types for database systems
 
-  \ingroup qt-sql
-
   \section1 Recommended Data Types for Qt-Supported Database Systems
 
   This table shows the recommended data types for extracting data from

src/sql/doc/src/sql-driver.qdoc

@@ -30,8 +30,6 @@
     \title SQL Database Drivers
     \brief How to configure and install Qt SQL drivers for supported databases.
 
-    \ingroup qt-sql
-
     The Qt SQL module uses driver \l{How to Create Qt
     Plugins}{plugins} to communicate with the different database
     APIs. Since Qt's SQL Module API is database-independent, all

src/sql/doc/src/sql-programming.qdoc

@@ -35,7 +35,6 @@
 /*!
     \page sql-programming.html
     \title SQL Programming
-    \ingroup qt-sql
     \nextpage Connecting to Databases
 
     \brief Database integration for Qt applications.
@@ -105,7 +104,6 @@
 /*!
     \page sql-connecting.html
     \title Connecting to Databases
-    \ingroup qt-sql
 
     \contentspage SQL Programming
     \previouspage SQL Programming
@@ -175,7 +173,6 @@
 /*!
     \page sql-sqlstatements.html
     \title Executing SQL Statements
-    \ingroup qt-sql
 
     \previouspage Connecting to Databases
     \contentspage SQL Programming
@@ -327,7 +324,6 @@
 /*!
     \page sql-model.html
     \title Using the SQL Model Classes
-    \ingroup qt-sql
 
     \previouspage Executing SQL Statements
     \contentspage SQL Programming
@@ -474,7 +470,6 @@
 /*!
     \page sql-presenting.html
     \title Presenting Data in a Table View
-    \ingroup qt-sql
 
     \previouspage Using the SQL Model Classes
     \contentspage SQL Programming
@@ -579,7 +574,6 @@
 /*!
     \page sql-forms.html
     \title Creating Data-Aware Forms
-    \ingroup qt-sql
 
     \previouspage Presenting Data in a Table View
     \contentspage SQL Programming