Remove deprecated test files and update import paths for message handling

Author: grongierisc

src/tests/conftest.py

@@ -4,7 +4,7 @@
 root_dir = d(d(abspath(__file__)))
 sys.path.append(root_dir)
 # add registerFiles to the path
-sys.path.append(join(join(root_dir, 'tests'), 'registerFiles'))
+sys.path.append(join(join(root_dir, 'tests'), 'registerFilesIop'))
 
 # from iop import Utils