Revert "Improve the ControllerConstraintHandlerTest to accept more Ht…

…tpReques…"

This reverts commit 3744f17.

http-server-tck/src/main/java/io/micronaut/http/server/tck/tests/constraintshandler/ControllerConstraintHandlerTest.java

@@ -19,7 +19,6 @@
 import io.micronaut.core.annotation.Introspected;
 import io.micronaut.core.annotation.NonNull;
 import io.micronaut.core.annotation.Nullable;
-import io.micronaut.core.convert.value.ConvertibleValues;
 import io.micronaut.core.type.Argument;
 import io.micronaut.http.HttpRequest;
 import io.micronaut.http.HttpStatus;
@@ -192,10 +191,6 @@ Optional<Map> constraintsEx(ConstraintViolationException e, HttpRequest<?> reque
                 password = credentials.getPassword();
             } else if (obj instanceof CredentialsWithNonNull credentials) {
                 password = credentials.getPassword();
-            } else if (obj instanceof Map<?, ?> map) {
-                password = map.get("password") == null ? null : map.get("password").toString();
-            } else if (obj instanceof ConvertibleValues<?> values) {
-                password = values.get("password", String.class).orElse(null);
             }
             return password != null ? Optional.of(Map.of("password", password)) : Optional.empty();
         }