[CI] remove mirror

Author: jared2020

.github/workflows/android.yml

@@ -27,8 +27,7 @@ jobs:
           # Target platform for build
           target: ${{ matrix.qt_target }}
           # Architecture for Windows/Android
-          arch: ${{ matrix.qt_arch }}
-          mirror: 'http://mirrors.ocf.berkeley.edu/qt/'      
+          arch: ${{ matrix.qt_arch }}  
       - uses: actions/checkout@v1
         with:
           fetch-depth: 1

.github/workflows/ios.yml

@@ -24,7 +24,6 @@ jobs:
           version: ${{ matrix.qt_ver }}
           # Target platform for build
           target: ${{ matrix.qt_target }}
-          mirror: 'http://mirrors.ocf.berkeley.edu/qt/'      
       - uses: actions/checkout@v1
         with:
           fetch-depth: 1

.github/workflows/macos.yml

@@ -25,7 +25,6 @@ jobs:
         with:
           version: ${{ matrix.qt_ver }}
           cached: 'false'
-          mirror: 'http://mirrors.ocf.berkeley.edu/qt/'   
       - uses: actions/checkout@v1
         with:
           fetch-depth: 1

.github/workflows/ubuntu.yml

@@ -24,7 +24,6 @@ jobs:
         with:
           version: ${{ matrix.qt_ver }}
           cached: 'false'
-          mirror: 'http://mirrors.ocf.berkeley.edu/qt/'     
       - name: ubuntu install GL library
         run: sudo apt-get install -y libglew-dev libglfw3-dev
       - uses: actions/checkout@v1

.github/workflows/windows.yml

@@ -65,7 +65,6 @@ jobs:
           arch: ${{ matrix.qt_arch }}
           aqtversion: '==0.10.0'
           cached: 'false'
-          mirror: 'http://mirrors.ocf.berkeley.edu/qt/'
       # 拉取代码
       - uses: actions/checkout@v1
         with: