update build script

build.sh

@@ -27,6 +27,7 @@ read -p "$(echo -e ${FRONTEND_Q})" choice
 if [ "$choice" = "y" ]; then
     echo -e "${BUILDING_FRONT}"
     cd frontend
+    rm -r ./build
     pnpm i
     pnpm run build
     cd ../
@@ -42,8 +43,6 @@ if [ "$choice" = "y" ]; then
             cd ../
         elif [ "$choice" = "n" ]; then
             echo -e "${EXITING}"
-        elif [ "$choice" = "c" ]; then
-            echo -e "${BUILD_CANCELLED}"
         else
             echo -e "${NO_CHOICE}"
         fi