refactor: app에서 querydsl 설정 제거

app/kac-app/build.gradle

@@ -86,19 +86,6 @@ tasks {
         }
     }
 
-    // querydsl
-    def querydslDir = layout.buildDirectory.dir("generated/querydsl").get().asFile
-    sourceSets {
-        main.java.srcDir(querydslDir)
-    }
-
-    compileJava {
-        options.getGeneratedSourceOutputDirectory().set(file(querydslDir))
-    }
-
-    clean {
-        delete file(querydslDir)
-    }
 }