[poincare] Add test on VerticalOffsetLayout

poincare/Makefile

@@ -268,6 +268,7 @@ tests += $(addprefix poincare/test/,\
   subtraction.cpp\
   symbol.cpp\
   trigo.cpp\
+  vertical_offset_layout.cpp\
 )
 
 testsExpected += $(addprefix poincare/test/,\

poincare/test/vertical_offset_layout.cpp

@@ -1,6 +1,5 @@
 #include <quiz.h>
 #include <poincare.h>
-#include <poincare_layouts.h>
 #include <ion.h>
 #include <assert.h>
 #include "helper.h"