Update .github/workflows/ubuntu-ci-x86_64-*.yaml: remove old prefer syntax

Author: climbfuji

.github/workflows/ubuntu-ci-x86_64-gnu.yaml

@@ -113,7 +113,7 @@ jobs:
 
             # Set compiler and MPI specs
             spack config add "packages:mpi:require:['[email protected]']"
-            spack config add "packages:all:prefer:['%gcc']"
+            #spack config add "packages:all:prefer:['%gcc']"
 
             # Add additional variants for MET packages, different from config/common/packages.yaml
             spack config add "packages:met:variants:+python +grib2 +graphics +lidar2nc +modis"

.github/workflows/ubuntu-ci-x86_64-oneapi-ifx.yaml

@@ -120,7 +120,7 @@ jobs:
             # Set compiler and MPI specs
             spack config add "packages:mpi:buildable:False"
             spack config add "packages:mpi:require:['[email protected]']"
-            spack config add "packages:all:prefer:['%oneapi']"
+            #spack config add "packages:all:prefer:['%oneapi']"
 
             # Add additional variants for MET packages, different from config/common/packages.yaml
             spack config add "packages:met:variants:+python +grib2 +graphics +lidar2nc +modis"

.github/workflows/ubuntu-ci-x86_64-oneapi.yaml

@@ -120,7 +120,7 @@ jobs:
             # Set compiler and MPI specs
             spack config add "packages:mpi:buildable:False"
             spack config add "packages:mpi:require:['[email protected]']"
-            spack config add "packages:all:prefer:['%oneapi']"
+            #spack config add "packages:all:prefer:['%oneapi']"
 
             # Add additional variants for MET packages, different from config/common/packages.yaml
             spack config add "packages:met:variants:+python +grib2 +graphics +lidar2nc +modis"