Revert "Potential fix to Travis build fails"

This reverts commit ed0e5dfef5.

src/common/resources/resourcemanager.cpp

@@ -292,7 +292,7 @@ bool CResourceManager::Copy(const std::string& from, const std::string& to)
         std::string writeDir = PHYSFS_getWriteDir();
         try
         {
-            boost::filesystem3::copy(writeDir + "/" + CleanPath(from), writeDir + "/" + CleanPath(to));
+            fs::copy(writeDir + "/" + CleanPath(from), writeDir + "/" + CleanPath(to));
         }
         catch (std::exception & e)
         {

src/script/scriptfunc.h

@@ -28,8 +28,6 @@
 
 #include "CBot/CBotDll.h"
 
-#include <string>
-
 
 class CObject;
 class CScript;