Remove julia CI actions (HDFGroup#4540)

These have been failing for a week or two for unclear reasons, both
in the Autotools and CMake. No obvious library changes triggered
this.

See GitHub issue HDFGroup#4539 for more info/discussion

The Julia tests will be disabled until the root cause is found.

.github/workflows/autotools.yml

@@ -99,12 +99,6 @@ jobs:
       with:
             build_mode: "production"
 
-    call-release-auto-julia:
-        name: "Autotools Julia Workflows"
-        uses: ./.github/workflows/julia-auto.yml
-        with:
-            build_mode: "production"
-
     call-release-auto-xpr:
         name: "Autotools TestExpress Workflows"
         uses: ./.github/workflows/testxpr-auto.yml

.github/workflows/cmake.yml

@@ -102,12 +102,6 @@ jobs:
         with:
             build_mode: "Release"
 
-    call-release-cmake-julia:
-        name: "CMake Julia Workflows"
-        uses: ./.github/workflows/julia-cmake.yml
-        with:
-            build_mode: "Release"
-
     call-release-cmake-xpr:
         name: "CMake TestExpress Workflows"
         uses: ./.github/workflows/testxpr-cmake.yml