Restore utils/get_opt_externals

utils/get_opt_externals

@@ -156,21 +156,6 @@ def get_slakos(destdir):
     os.rename(unpackname, targetname)
 
 
-    '''Download additional parameters to test mDFTB'''
-    url = 'https://github.com/v2quan89/testparams4mdftb/raw/main/test3obp.tar.gz'
-    fname = os.path.join(destdir, 'test3obp.tar.gz')
-    unpackname = os.path.join(destdir, 'test3obp')
-    targetname = os.path.join(destdir, 'origin/test3obp')
-    if os.path.exists(unpackname):
-        shutil.rmtree(unpackname)
-    if os.path.exists(targetname):
-        shutil.rmtree(targetname)
-    download_file(url, fname)
-    unpack_file(fname)
-    os.remove(fname)
-    os.rename(unpackname, targetname)
-
-
 def get_gbsa(destdir):
     '''Downloads and extracts parametrizations for gbsa.'''