ci: remove test build workflow and related configuration

The test build workflow has been removed as it's no longer needed. This includes:
- Removing the 'Test Build' option from build selection
- Deleting the test-build.yml workflow file
- Disabling the unused free space script download step

.github/workflows/main.yml

@@ -32,7 +32,6 @@ on:
         type: choice
         options:
           - All
-          - Test Build
           - Android12-5.10
           - Android13-5.10
           - Android13-5.15
@@ -56,14 +55,6 @@ on:
 
 jobs:
 
-  build-test:
-    if: inputs.build_selection == 'Test Build'
-    uses: ./.github/workflows/test-build.yml
-    secrets: inherit
-    with:
-      ksu_variant: ${{ inputs.ksu_variant }}
-      ksu_commit: ${{ inputs.ksu_commit }}
-
   build-a12-5-10:
     if: (inputs.build_selection == 'All' || inputs.build_selection == 'Android12-5.10')
     uses: ./.github/workflows/kernel-a12-5-10.yml
@@ -142,6 +133,7 @@ jobs:
       RELEASE_BODY: ""
     steps:
       - name: Download Apache Arrow's util_free_space.sh
+        if: false
         run: |
           curl -L -o util_free_space.sh https://raw.githubusercontent.com/apache/arrow/main/ci/scripts/util_free_space.sh
           chmod +x util_free_space.sh
@@ -154,10 +146,6 @@ jobs:
         if: inputs.release_type != 'Actions'
         run: |
             LATEST_TAG=$(gh api repos/${{ github.repository }}/tags --jq '.[0].name' 2>/dev/null || echo "")
-            if [ -z "$LATEST_TAG" ]; then
-              LATEST_TAG="v1.5.12-r0"
-            fi
-            
             NEW_TAG=$(echo "$LATEST_TAG" | awk -F'-r' '{suffix=$2; if (!suffix) suffix=0; suffix++; printf "%s-r%d", $1, suffix}')
     
             echo "New tag: $NEW_TAG"

.github/workflows/test-build.yml

@@ -1,110 +0,0 @@
-name: Test Build
-
-permissions:
-  contents: write  # Allow writing to repository contents
-  actions: write   # Allows triggering actions
-
-on:
-  workflow_call:
-    inputs:
-      ksu_variant:
-        required: true
-        type: string
-      ksu_commit:
-        required: false
-        type: string
-
-jobs:
-  build-test-kernels:
-    name: "Test Build ${{ matrix.kernel_version }}.${{ matrix.sub_level }}-${{ matrix.android_version }}"
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          # Android 12 - 5.10 oldest (OLD)
-          - android_version: "android12"
-            kernel_version: "5.10"
-            sub_level: "43"
-            os_patch_level: "2021-08"
-          
-          # Android 12 - 5.10 LTS (NEW)
-          - android_version: "android12"
-            kernel_version: "5.10"
-            sub_level: "X"
-            os_patch_level: "lts"
-          
-          # Android 13 - 5.10 oldest (OLD)
-          - android_version: "android13"
-            kernel_version: "5.10"
-            sub_level: "107"
-            os_patch_level: "2022-04"
-          
-          # Android 13 - 5.10 LTS (NEW)
-          - android_version: "android13"
-            kernel_version: "5.10"
-            sub_level: "X"
-            os_patch_level: "lts"
-          
-          # Android 13 - 5.15 oldest (OLD)
-          - android_version: "android13"
-            kernel_version: "5.15"
-            sub_level: "41"
-            os_patch_level: "2022-06"
-          
-          # Android 13 - 5.15 LTS (NEW)
-          - android_version: "android13"
-            kernel_version: "5.15"
-            sub_level: "X"
-            os_patch_level: "lts"
-          
-          # Android 14 - 5.15 oldest (OLD)
-          - android_version: "android14"
-            kernel_version: "5.15"
-            sub_level: "110"
-            os_patch_level: "2023-06"
-          
-          # Android 14 - 5.15 LTS (NEW)
-          - android_version: "android14"
-            kernel_version: "5.15"
-            sub_level: "X"
-            os_patch_level: "lts"
-          
-          # Android 14 - 6.1 oldest (OLD)
-          - android_version: "android14"
-            kernel_version: "6.1"
-            sub_level: "25"
-            os_patch_level: "2023-06"
-          
-          # Android 14 - 6.1 LTS (NEW)
-          - android_version: "android14"
-            kernel_version: "6.1"
-            sub_level: "X"
-            os_patch_level: "lts"
-          
-          # Android 14 - 6.1 specific sublevel (OLD)
-          - android_version: "android14"
-            kernel_version: "6.1"
-            sub_level: "134"
-            os_patch_level: "2025-05"
-          
-          # Android 15 - 6.6 oldest (NEW)
-          - android_version: "android15"
-            kernel_version: "6.6"
-            sub_level: "30"
-            os_patch_level: "2024-07"
-          
-          # Android 15 - 6.6 LTS (OLD)
-          - android_version: "android15"
-            kernel_version: "6.6"
-            sub_level: "X"
-            os_patch_level: "lts"
-    
-    uses: ./.github/workflows/build.yml
-    secrets: inherit
-    with:
-      android_version: ${{ matrix.android_version }}
-      kernel_version: ${{ matrix.kernel_version }}
-      sub_level: ${{ matrix.sub_level }}
-      os_patch_level: ${{ matrix.os_patch_level }}
-      ksu_variant: ${{ inputs.ksu_variant }}
-      ksu_commit: ${{ inputs.ksu_commit }}