docs/user: Remove duplicate "ingroup interface" from layout docs.

Since the "Layout" group is a member of the "Interface" group,
Doxygen automatically adds the "Interface" group to all pages
in the "Layout" group, meaning that having an explicit "ingroup Interface"
created duplicate group tags.

docs/user/interface/AbstractLayout.dox

@@ -4,7 +4,7 @@
  *
  * Authors:
  *		Alex Wilson, [email protected]
- * 
+ *
  * Corresponds to:
  *		headers/os/interface/AbstractLayout.h	rev 39055
  *		src/kits/inteface/AbstractLayout.cpp	rev 39055
@@ -13,7 +13,6 @@
 
 /*!
 	\class BAbstractLayout
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief BLayout subclass providing convenience methods for derived

docs/user/interface/GridLayout.dox

@@ -13,7 +13,6 @@
 
 /*!
 	\file GridLayout.h
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Provides the BGridLayout class.
@@ -22,7 +21,6 @@
 
 /*!
 	\class BGridLayout
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief The BGridLayout class a BLayout subclass that arranges the items it

docs/user/interface/GroupLayout.dox

@@ -13,7 +13,6 @@
 
 /*!
 	\file GroupLayout.h
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Describes the BGroupLayout class.
@@ -22,7 +21,6 @@
 
 /*!
 	\class BGroupLayout
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief The BGroupLayout class is a simple BLayout subclass that
@@ -163,7 +161,7 @@
 		\a weight.
 
 	\since Haiku R1
-*/ 
+*/
 
 
 /*!

docs/user/interface/Layout.dox

@@ -13,7 +13,6 @@
 
 /*!
 	\file Layout.h
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Defines the BLayout class.
@@ -22,7 +21,6 @@
 
 /*!
 	\class BLayout
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief The BLayout class provides an interface, and some basic

docs/user/interface/LayoutBuilder.Group.dox

@@ -5,7 +5,7 @@
  * Authors:
  *		John Scipione, [email protected]
  *		Ingo Weinhold, [email protected]
- * 
+ *
  * Corresponds to:
  *		headers/os/interface/GroupLayoutBuilder.h	 rev 42274
  *		src/kits/interface/GroupLayoutBuilder.cpp	 rev 42274
@@ -14,7 +14,6 @@
 
 /*!
 	\file GroupLayoutBuilder.h
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Provides the BLayoutBuilder::Group<> class.
@@ -25,7 +24,6 @@
 
 /*!
 	\class BLayoutBuilder::Group<>
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief BLayoutBuilder::Base subclass for building BGroupLayouts.

docs/user/interface/LayoutBuilder.dox

@@ -13,7 +13,6 @@
 
 /*!
 	\file LayoutBuilder.h
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Defines the BLayoutBuilder templates.
@@ -22,13 +21,12 @@
 
 /*!
 	\class BLayoutBuilder::Base<>
-	\ingroup interface
 	\ingroup layout
 	\brief Base for all other layout builders in the BLayoutBuilder namespace.
 
 	This class provides the stack-like semantics for its subclasses. The
 	BLayoutBuilder::Group, BLayoutBuilder::Grid and BLayoutBuilder::Split all
-	provide methods such as AddGrid() AddGroup() and AddSplit(), which 
+	provide methods such as AddGrid() AddGroup() and AddSplit(), which
 	make a new builder, place it on top of your builder stack and return it.
 	Now you are operating on the new builder. When you call	the End() method on
 	the new builder, you are returned the one you had previously been using. At
@@ -173,7 +171,7 @@ public:
 	inline	GroupBuilder		AddGroup(BGroupView* groupView,	int32 column,
 									int32 row, int32 columnCount = 1,
 									int32 rowCount = 1);
-	inline	GroupBuilder		AddGroup(BGroupLayout* groupLayout, 
+	inline	GroupBuilder		AddGroup(BGroupLayout* groupLayout,
 									int32 column, int32 row,
 									int32 columnCount = 1, int32 rowCount = 1);
 

docs/user/interface/LayoutItem.dox

@@ -13,7 +13,6 @@
 
 /*!
 	\file LayoutItem.h
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Describes the BLayoutItem class.
@@ -22,7 +21,6 @@
 
 /*!
 	\class BLayoutItem
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Abstract class representing things that are positionable and
@@ -257,7 +255,7 @@
 	\fn BRect BLayoutItem::Frame() = 0
 	\brief Return the bounding frame of this item.
 
-	The returned BRect is in the coordinate system of the target view of the 
+	The returned BRect is in the coordinate system of the target view of the
 	BLayout this item belongs to.
 
 	\since Haiku R1

docs/user/interface/TwoDimensionalLayout.dox

@@ -13,7 +13,6 @@
 
 /*!
 	\file TwoDimensionalLayout.h
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Defines the BTwoDimensionalLayout class.
@@ -22,7 +21,6 @@
 
 /*!
 	\class BTwoDimensionalLayout
-	\ingroup interface
 	\ingroup layout
 	\ingroup libbe
 	\brief Abstract BLayout subclass arranging items within rows and columns.