Don't install headers

The package does not export any libraries so there's no reason to
install header files

Author: bjsowa

CMakeLists.txt

@@ -76,11 +76,6 @@ install(TARGETS ${PROJECT_NAME}
   DESTINATION lib/${PROJECT_NAME}
 )
 
-install(DIRECTORY include/${PROJECT_NAME}/
-  DESTINATION include/${PROJECT_NAME}
-  FILES_MATCHING PATTERN "*.h" PATTERN "*.hpp"
-)
-
 ###########
 ## Tests ##
 ###########