BuildConfig.java, showing build_type = debug in release version of my app

[tyf-manoj]

package za.co.twyst;

public final class BuildConfig {
public static final boolean DEBUG = Boolean.parseBoolean("true");
public static final String APPLICATION_ID = "za.co.twyst";
public static final String BUILD_TYPE = "debug";
public static final String FLAVOR = "";
public static final int VERSION_CODE = 1;
public static final String VERSION_NAME = "1.0";

public BuildConfig() {
}

}
it raise concern for logging and performance of plugin, can anyone help me to get clarity why it is like this on production build