Revert "Add option to use absolute node margins"

The issue was fixed upstream (see paceholder#470) in commit
3ed0391.

This reverts commit 551b609.

Author: Jan-Felix-Langenbach-casaGeo

CMakeLists.txt

@@ -33,7 +33,6 @@ option(BUILD_SHARED_LIBS "Build as shared library" ON)
 option(BUILD_DEBUG_POSTFIX_D "Append d suffix to debug libraries" OFF)
 option(QT_NODES_FORCE_TEST_COLOR "Force colorized unit test output" OFF)
 option(QT_NODES_REDUCED_SHAPE_MARGINS "Reduce the interaction margins of the nodes absolute instead of relative" OFF)
-option(QT_NODES_ABSOLUTE_BOUNDING_RECT_MARGINS "Make the drawing margins of the nodes absolute instead of relative" OFF)
 option(USE_QT6 "Build with Qt6 (Enabled by default)" ON)
 
 if(QT_NODES_DEVELOPER_DEFAULTS)
@@ -164,7 +163,6 @@ target_compile_definitions(QtNodes
     NODE_EDITOR_EXPORTS
     #NODE_DEBUG_DRAWING
     $<$<BOOL:${QT_NODES_REDUCED_SHAPE_MARGINS}>:NODE_EDITOR_REDUCED_SHAPE_MARGINS>
-    $<$<BOOL:${QT_NODES_ABSOLUTE_BOUNDING_RECT_MARGINS}>:NODE_EDITOR_ABSOLUTE_BOUNDING_RECT_MARGINS>
     QT_NO_KEYWORDS
 )