ci: remove unused qt-install-dir var

.github/actions/install-dependencies/action.yml

@@ -13,10 +13,6 @@ inputs:
     description: "The version of Qt to install (Windows & macOS)"
     required: false
 
-  qt-install-dir:
-    description: "The path to install Qt into (Windows & macOS)"
-    required: false
-
 outputs:
   vcpkg-cmake-config:
     description: "windows vcpkg output for cmaket"
@@ -72,7 +68,6 @@ runs:
       env:
         AQT_CONFIG: ${{ github.workspace }}/.github/actions/install-dependencies/aqt.ini
       with:
-        dir: ${{inputs.qt-install-dir}}
         version: ${{inputs.qt-version}}
         cache: true
         cache-key-prefix: ${{matrix.target.os}}-${{inputs.qt-version}}

.github/workflows/continuous-integration.yml

@@ -133,19 +133,16 @@ jobs:
             runs-on: "windows-2022"
             timeout: 30
             config-args: "-G Ninja"
-            qt-install-dir: "C:"
 
           - name: "macos-14-arm64"
             runs-on: "macos-14"
             timeout: 10
             config-args: "-DCMAKE_OSX_ARCHITECTURES=\"arm64\" -DCMAKE_OSX_SYSROOT=/Applications/Xcode_15.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
-            qt-install-dir: "/Users/runner"
 
           - name: "macos-13-x64"
             runs-on: macos-13
             timeout: 20
             config-args: "-DCMAKE_OSX_ARCHITECTURES=\"x86_64\" -DCMAKE_OSX_SYSROOT=/Applications/Xcode_15.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
-            qt-install-dir: "/Users/runner"
 
           - name: "debian-13-x86_64"
             runs-on: ubuntu-latest
@@ -272,7 +269,6 @@ jobs:
         uses: ./.github/actions/install-dependencies
         with:
           qt-version: 6.9.0
-          qt-install-dir: ${{matrix.target.qt-install-dir}}
           like: ${{ matrix.target.like }}
 
       - name: Get version