Update build.yml to remove duplicated -y yes confirmation when installing Linux requirements

.github/workflows/build.yml

@@ -33,7 +33,7 @@ jobs:
         run: sudo apt update -y && sudo apt upgrade -y
 
       - name: Install flutter Linux prerequisites
-        run: sudo apt install -y curl git unzip xz-utils zip libglu1-mesa -y
+        run: sudo apt install -y curl git unzip xz-utils zip libglu1-mesa
 
       - name: Flutter build Linux
         run: flutter build linux --release --verbose --dart-define=CI=true