openorienteering-mapper-git: Don't enforce deprecated PROJ API

Author: dg0yt

openorienteering-mapper-git.cmake

@@ -77,7 +77,6 @@ foreach(git_tag ${Mapper_GIT_TAGS})
 	    CMAKE_ARGS
 	      "-DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}"
 	      "-UCMAKE_STAGING_PREFIX"
-	      "-DCMAKE_CXX_FLAGS=-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H"
 	      "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}"
 	      "-DBUILD_SHARED_LIBS=0"
 	      "-DMapper_AUTORUN_SYSTEM_TESTS=0"