Created the method removeStaff

opp/core/src/main/java/Repository.java

@@ -96,5 +96,7 @@ public interface Repository {
 
     void saveTeamMember(TeamMember TeamMember) throws Exception;
 
+    TeamMember removeTeamMember(Id<OperationTeam> operationTeamId, Id<OPStaff> opStaffId) throws Exception;
+
     List<OPStaff> getOperationTeamOPStaffImpl(Id<OperationTeam> operationTeamId);
 }

opp/core/src/main/java/TeamMemberImpl.java

@@ -31,13 +31,8 @@ public class TeamMemberImpl implements TeamMemberService{
         return teammember;
     }
 
-    private TeamMember removeStaffimpl(TeamMember.RemoveStaff rs) {
-        TeamMember teammember =
-                new TeamMember(
-                        rs.operationTeamId(),
-                        rs.opStaffId(),
-                        Instant.now()
-                );
-        return teammember;
+    private TeamMember removeStaffimpl(TeamMember.RemoveStaff rs) throws Exception {
+        return repo.removeTeamMember(rs.operationTeamId(), rs.opStaffId());
+
     }
 }

opp/jdbc-repo-impl/src/main/java/JDBCRepository.java

@@ -659,6 +659,26 @@ class JDBCRepository implements Repository
     }
   }
 
+  public TeamMember removeTeamMember(Id<OperationTeam> operationTeamId, Id<OPStaff> opStaffId) throws Exception{
+
+    try(
+            var stmt = conn.createStatement()
+    ){
+      //TODO
+      /*var sql =
+              findOPStaff(opStaff.id()).isPresent() ?
+                      updateOPStaffSQL(opStaff) :
+                      insertOPStaffSQL(opStaff);*/
+      var sql = "DELETE FROM opStaffsInOperationTeams WHERE operationTeamId = '"+ operationTeamId.value() +"' AND opStaffId = '"+opStaffId.value()+"';";
+
+      stmt.executeUpdate(sql);
+
+    }catch(SQLException e){
+      throw new RuntimeException(e);
+    }
+    return null;
+  }
+
   @Override
   public List<OPStaff> getOperationTeamOPStaffImpl(Id<OperationTeam> operationTeamId){
 

opp/jdbc-repo-impl/src/test/java/Tests.java

@@ -333,7 +333,7 @@ public final class Tests
     OperationTeam deleteOperationTeam = operationTeamService.process(deleteCommand);
   }
 
-  @Test
+  //@Test
   public void testInsertTeamMember1() throws Exception{
 
     try {
@@ -343,6 +343,21 @@ public final class Tests
     }
   }
 
+  @Test
+  public void testRemoveTeamMember() throws Exception{
+
+    var opStaffId = new Id<OPStaff>("4444");
+    var operationTeamId = new Id<OperationTeam>("31");
+
+    TeamMember.RemoveStaff deleteCommand = new TeamMember.RemoveStaff(
+            operationTeamId,
+            opStaffId
+    );
+
+    TeamMember deleteTeamMember = teamMemberService.process(deleteCommand);
+
+  }
+
   //@Test
   public void testGetOperationTeam() throws Exception{