PIP-908 Remve annotation @embeddable from ExecutionCommand class

Author: QuyenLy87

src/main/java/org/ihtsdo/rvf/core/data/model/ExecutionCommand.java

@@ -9,7 +9,6 @@
 /**
  * A class that encapsulate the logic/code that is used to run a {@link Test}.
  */
-@Embeddable
 @Entity(name = "command")
 @Table(name = "execution_command")
 public class ExecutionCommand {