There is no need to worry.

不必担心。

《新英汉大辞典》

There is no need to worry about mere size.

不要为体型大小而担忧。

youdao

If you aren't (or don't think you are), there is no need to worry.

如果你不是(或者你不认为自己是)，那也用不者烦恼。

youdao

There is no need to worry too much about the return on investment.

FORBES: Market Economy Distortions Can Get Very Dangerous

Yet if they do not, advises the ministry soothingly, economics tells us that there is no need to worry.

ECONOMIST: Russia's economy

But such symmetry hardly means there is no need to worry about Huawei.

ECONOMIST: Huawei