render.article: Remove brackets using code instead of RegExp

Casees:
1) Hello (and welcome)
2) Hello )and welcome(
3) (Hello (and) welcome)

The current RegExp only takes care of (1). The new code should
take care of all the cases.

Bug: 65138
Change-Id: I39f38beed0cf612067d6fc61b18295d1d38fcc22
Merge "render.article: Remove brackets using code instead of RegExp"