Remove custom Cockroach dialect

Author: nvb

java/hibernate/src/main/java/com/cockroachlabs/dialect/CockroachDialect.java

@@ -17,8 +17,7 @@
         <property name="connection.pool_size">1</property>
 
         <!-- SQL dialect -->
-        <property name="dialect">com.cockroachlabs.dialect.CockroachDialect</property>
-        <!--<property name="dialect">org.hibernate.dialect.PostgreSQL94Dialect</property>-->
+        <property name="dialect">org.hibernate.dialect.PostgreSQL94Dialect</property>
 
         <!-- Echo all executed SQL to stdout -->
         <property name="show_sql">true</property>