AHN.Buildings: remove safeguard for Boost version <1.56, as now at le…

…ast Boost 1.71 is required.

Introduced in 7c05882.

AHN.Buildings/main.cpp

@@ -4,10 +4,6 @@
 #include <ctime>
 #include <chrono>
 
-#ifdef __linux__
-#include <cstdlib>
-#endif
-
 #include <boost/program_options.hpp>
 #include <boost/filesystem.hpp>
 #include <gdal.h>
@@ -25,16 +21,6 @@ using namespace AHN::Buildings;
 
 int main(int argc, char* argv[]) try
 {
-	#ifdef __linux__
-	{
-		// For Boost verion <1.56 Boost internally tries to construct a std::locale("").
-		// This call will fail on Linux if the LC_ALL environment variable is not configured (or misconfigured).
-		const char* lc_all = std::getenv("LC_ALL");
-		if(!lc_all || !strlen(lc_all))
-			setenv("LC_ALL", "C", 1);
-	}
-	#endif
-
 	std::string tileName;
 	std::string ahn2Surface,
 	            ahn3Surface,