Don't hard-set size of EffectView

This is optimistic and assumes all widgets that don't have a layout
already  fix their size. Even when this isn't true, it's better to set
it inside the effects and not the EffectView.

Author: SpomJ

src/gui/EffectView.cpp

@@ -96,10 +96,7 @@ EffectView::EffectView( Effect * _model, QWidget * _parent ) :
 				{
 					m_controlView->layout()->setSizeConstraint(QLayout::SetFixedSize);
 				}
-				else
-				{
-					m_controlView->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
-				}
+				// else hope it already manages its size
 			}
 			m_subWindow->setWindowFlag(Qt::WindowMaximizeButtonHint, false);
 			m_subWindow->hide();