Remove pin for PrgEng-gnu as CPE has moved to a new version.

[tzinsky]

No description provided.

[vasslitvinov]

@tzinsky @riftEmber and others -- with my change, we now have "module swap" for both "gcc" and "gcc-native". I intentionally put both of them there because I did not know what machines this file is used for. The machine hosting the test configuration hpe-cray-ex-performance-test-perf.hpe-cray-ex.ofi and our GPU configurations has "gcc-native", so the "gcc" line is not needed there. Fortunately, it is harmless: "module swap" reports an error, yet the job continues. Here is what we got in the job hpe-cray-ex-performance-test-perf.hpe-cray-ex.ofi/169 today:

# I do not know what to think about the following. -Vass
Lmod is automatically replacing "cce/19.0.0-rc3" with "gcc-native/14.2".

# This is the error due to 'module swap' on gcc. -Vass
Lmod has detected the following error: Swap failed: "gcc" is not loaded.

# The following confirms correct operation. -Vass.
The following have been reloaded with a version change:
  1) gcc-native/14.2 => gcc-native/12.3

Ideally, we should be able to compile with the default gcc version and remove "module swap" for both "gcc" and "gcc-native", making the above discussion moot.

P.S. The test failures that this PR was intended to resolve have, indeed, resolved.

[riftEmber]

Ideally, we should be able to compile with the default gcc version and remove "module swap" for both "gcc" and "gcc-native", making the above discussion moot.

Agreed. Did we observe a case already where we fail with the default version? If not, I say we can take out those lines and fix what breaks.