Remove CodeQL workflow and config

Code scanning is not enabled for this repository, removing unused workflow.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/codeql/codeql-config.yml

@@ -1,19 +0,0 @@
-name: "Rust without tests"
-
-disable-default-queries: false
-
-queries:
-  - uses: security-extended
-  - uses: security-and-quality
-  - uses: ./.github/codeql/queries
-
-query-filters:
-  - exclude:
-      id:
-        - rust/unwrap-on-option
-        - rust/unwrap-on-result
-        - rust/expect-used
-
-analysis:
-  dataflow:
-    default-precision: high

.github/codeql/queries/common/ProductionOnly.qll

@@ -1,20 +0,0 @@
-import rust
-
-predicate isTestOnly(Item i) {
-  exists(ConditionalCompilation cc |
-    cc.getItem() = i and
-    cc.getCfg().toString() = "test"
-  )
-}
-
-predicate hasTestAttribute(Item i) {
-  exists(Attribute a |
-    a.getItem() = i and
-    a.getName() = "test"
-  )
-}
-
-predicate isProductionCode(Item i) {
-  not isTestOnly(i) and
-  not hasTestAttribute(i)
-}

.github/codeql/queries/qlpack.yml

@@ -1,4 +0,0 @@
-name: rust-production-only
-version: 0.0.1
-dependencies:
-  codeql/rust-all: "*"

.github/workflows/codeql.yml

@@ -1,45 +0,0 @@
-name: "CodeQL Advanced"
-
-on:
-  push:
-    branches: [ "*" ]
-  pull_request:
-    branches: [ "*" ]
-  schedule:
-    - cron: '0 0 * * 0'
-
-jobs:
-  analyze:
-    name: Analyze (${{ matrix.language }})
-    runs-on: ${{ (matrix.language == 'swift' && 'macos-latest') || 'ubuntu-latest' }}
-
-    permissions:
-      security-events: write
-      packages: read
-      actions: read
-      contents: read
-
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - language: actions
-            build-mode: none
-          - language: rust
-            build-mode: none
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@v4
-        with:
-          languages: ${{ matrix.language }}
-          build-mode: ${{ matrix.build-mode }}
-          config-file: .github/codeql/codeql-config.yml
-
-      - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v4
-        with:
-          category: "/language:${{ matrix.language }}"