Remove usages after text has changed in normal mode

ftplugin/python/jedi.vim

@@ -47,4 +47,5 @@ if g:jedi#auto_initialization
             autocmd! InsertLeave <buffer> if pumvisible() == 0|pclose|endif
         augroup END
     endif
+    autocmd TextChanged <buffer> call jedi#remove_usages()
 endif