ENH: remove OpenThreads from OTB_INCLUDE_ABSOLUE_DIRS and OTB_INCLUDE_RELATIVE_DIRS

CMake/otbIncludeDirectories.cmake

@@ -359,16 +359,6 @@ IF(OTB_USE_GETTEXT)
   	${GETTEXT_INCLUDE_DIR} )
 ENDIF(OTB_USE_GETTEXT)
 
-# For OpentTreads  header file
-IF(OTB_USE_EXTERNAL_OPENTHREADS)
-  SET(OTB_INCLUDE_ABSOLUE_DIRS ${OTB_INCLUDE_ABSOLUE_DIRS}
-    ${OPENTHREADS_INCLUDE_DIR} )
-ELSE(OTB_USE_EXTERNAL_OPENTHREADS)
-        SET(OTB_INCLUDE_RELATIVE_DIRS ${OTB_INCLUDE_RELATIVE_DIRS}
-                Utilities/otbopenthreads/OpenThreads/include)
-ENDIF(OTB_USE_EXTERNAL_OPENTHREADS)
-
-
 #For FLTK header file
 IF(OTB_USE_EXTERNAL_FLTK)
         SET(OTB_INCLUDE_ABSOLUE_DIRS ${OTB_INCLUDE_ABSOLUE_DIRS}