test: remove duplicate executeTokenCreateTransaction(null) assertion (#113)

Signed-off-by: Alejandro <26930485+alejandroGM0@users.noreply.github.com>

Author: alejandroGM0

hiero-enterprise-base/src/test/java/org/hiero/base/test/ProtocolLayerClientTests.java

@@ -71,8 +71,6 @@ void testNullParams() {
         NullPointerException.class, () -> client.executeTopicDeleteTransaction(null));
     Assertions.assertThrows(
         NullPointerException.class, () -> client.executeTopicMessageSubmitTransaction(null));
-    Assertions.assertThrows(
-        NullPointerException.class, () -> client.executeTokenCreateTransaction(null));
     Assertions.assertThrows(
         NullPointerException.class, () -> client.executeBurnTokenTransaction(null));
     Assertions.assertThrows(