RFR: 8377143: Parallel: Remove special treatment in JstatGcCapacityResults.java

[Thomas Schatzl]

On Wed, 4 Feb 2026 08:03:59 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Remove the `if (isTenuredParallelGC) {` path in `JstatGcCapacityResults.java` because ParallelGC ensures `NGC == S0C + S1C + EC` like other GCs nowadays.
> 
> Test: tier1-5

Maybe update copyright date.

-------------

Marked as reviewed by tschatzl (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/29562#pullrequestreview-3756572047