Remove Red Hat 9.4 from CI

RHEL-9.4 is replaced by RHEL-9.6. [CI Platforms]

Pick-to: 6.11 6.10 6.8
Task-number: QTQAINFRA-7326
Change-Id: Ia270d20eda412da291d9e09c265afa9c977fab2e
Reviewed-by: Tero Heikkinen <tero.heikkinen@qt.io>

coin/platform_configs/qtsaferenderer.yaml

@@ -13,7 +13,6 @@ Include: [
     "opensuse-16.0-developer-build",
     "sles-15_sp6-static",
     "windows-10_22h2-msvc2022",
-    "rhel-9.4",
     "rhel-9.6",
     "windows-11_24h2-mingw13",
     "windows-11_24H2-mingw13-developer-build",
@@ -40,16 +39,6 @@ Configurations:
     Environment variables: [
         'CMAKE_ARGS=-DCMAKE_OSX_ARCHITECTURES="x86_64;arm64"'
     ]
--
-    Id: 'Linux-RHEL_9_4_Static'
-    Template: 'qtci-linux-RHEL-9.4-x86_64-50'
-    Compiler: 'GCC'
-    Features: ['Packaging', 'Sccache', 'UseConfigure', 'MinimalStaticTests']
-    Configure arguments: '-static -no-icu -nomake examples -release -headersclean -qt-libjpeg -qt-libpng -qt-pcre -qt-harfbuzz -qt-doubleconversion -no-libudev -bundled-xcb-xinput -no-sql-mysql'
-    Environment variables: [
-        'CMAKE_ARGS=-DOpenGL_GL_PREFERENCE=LEGACY',
-        'NON_QTBASE_CMAKE_ARGS=-DINPUT_headersclean=ON'
-    ]
 -
     Id: 'Linux-RHEL_9_6_Static'
     Template: 'qtci-linux-RHEL-9.6-x86_64-51'