Drop "--enable-preview" from JDK 11 build options (#4760)

Author: cowtowncoder

pom.xml

@@ -331,19 +331,11 @@
               <release>11</release>
               <compilerArgs>
                 <arg>-parameters</arg>
-                <arg>--enable-preview</arg>
               </compilerArgs>
               <fork>true</fork>
               <useIncrementalCompilation>true</useIncrementalCompilation>
             </configuration>
           </plugin>
-          <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-surefire-plugin</artifactId>
-            <configuration>
-              <argLine>--enable-preview</argLine>
-            </configuration>
-          </plugin>
         </plugins>
       </build>
     </profile>