Remove Imports of Locale from all Play26CallFactory.mustache-files

Signed-off-by: Chrimle <28791817+Chrimle@users.noreply.github.com>

Author: Chrimle

modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/Play26CallFactory.mustache

@@ -21,7 +21,6 @@ import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
-import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.CompletionStage;
 import java.util.concurrent.Executor;