AUP3: Removes OD code related to project file handling

This removes all of the OnDemand code embedded throughout
    the main codebase. Individual files related specifically
    to OD have been left in place, but removed from the build.

src/FileFormats.h

@@ -103,13 +103,9 @@ extern FileExtensions sf_get_all_extensions();
 
 wxString sf_normalize_name(const char *name);
 
-// This function wrapper uses a mutex to serialize calls to the SndFile library.
-#include "ondemand/ODTaskThread.h"
-extern ODLock libSndFileMutex;
 template<typename R, typename F, typename... Args>
 inline R SFCall(F fun, Args&&... args)
 {
-   ODLocker locker{ &libSndFileMutex };
    return fun(std::forward<Args>(args)...);
 }