Why is this an issue?

The use of parentheses, even those not required to enforce a desired order of operations, can clarify the intent behind a piece of code. But redundant pairs of parentheses could be misleading, and should be removed.

Noncompliant code example

if (a && ((x + y > 0))) // Noncompliant
{
  //...
}

return ((x + 1));  // Noncompliant

Compliant solution

if (a && (x + y > 0))
{
  //...
}

return x + 1;