Merge pull request #22913 from eclipse-openj9/revert-22910-aix25on17

Revert "Run AIX jdk25+ testing on machine with the 17.1 C++ Runtime"

Author: pshipton

buildenv/jenkins/variables/defaults.yml

@@ -278,9 +278,6 @@ ppc64_aix:
       all: 'unset LIBPATH'
     vars:
       all: 'PATH+XLC=/opt/IBM/xlC/16.1.0/bin:/opt/IBM/xlc/16.1.0/bin CC=xlclang CXX=xlclang++'
-  extra_test_labels:
-    25: 'sw.tool.c++runtime.17_1'
-    next: 'sw.tool.c++runtime.17_1'
 #========================================#
 # Linux x86 64bits
 #========================================#