Remove cotire

It has been superseded by new CMake versions

Author: rafalh

CMakeLists.txt

@@ -7,7 +7,6 @@ if(NOT "${CMAKE_SIZEOF_VOID_P}" STREQUAL "4")
 endif()
 
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
-include(cotire)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)