Remove unused PBD::sys::exists function

git-svn-id: svn://localhost/ardour2/branches/3.0@12884 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/pbd/filesystem.cc

@@ -63,12 +63,6 @@ path::operator/=(const char* rhs)
 	return *this;
 }
 
-bool
-exists (const path & p)
-{
-	return Glib::file_test (p.to_string(), Glib::FILE_TEST_EXISTS);
-}
-
 bool
 is_directory (const path & p)
 {

libs/pbd/pbd/filesystem.h

@@ -103,9 +103,6 @@ public:
 inline path operator/ (const path& lhs, const path& rhs)
 { return path(lhs) /= rhs; }
 
-/// @return true if path at p exists
-bool exists(const path & p);
-
 /// @return true if path at p is a directory.
 bool is_directory(const path & p);