Debug queries fix (get rid of dummy results)

plugins/org.jkiss.dbeaver.debug.core/src/org/jkiss/dbeaver/debug/jdbc/DBGJDBCSession.java

@@ -113,7 +113,7 @@ public abstract class DBGJDBCSession implements DBGSession {
         try (JDBCSession session = getControllerConnection().openSession(monitor, DBCExecutionPurpose.UTIL, "Add breakpoint")) {
             try (Statement stmt = session.createStatement()) {
                 String sqlQuery = composeAddBreakpointCommand(descriptor);
-                stmt.executeQuery(sqlQuery);
+                stmt.execute(sqlQuery);
             } catch (SQLException e) {
                 throw new DBGException("SQL error", e);
             }
@@ -128,7 +128,7 @@ public abstract class DBGJDBCSession implements DBGSession {
         try (JDBCSession session = getControllerConnection().openSession(monitor, DBCExecutionPurpose.UTIL, "Remove breakpoint")) {
             try (Statement stmt = session.createStatement()) {
                 String sqlCommand = composeRemoveBreakpointCommand(bp);
-                stmt.executeQuery(sqlCommand);
+                stmt.execute(sqlCommand);
             } catch (SQLException e) {
                 throw new DBGException("SQL error", e);
             }

plugins/org.jkiss.dbeaver.debug.core/src/org/jkiss/dbeaver/debug/jdbc/DBGJDBCWorker.java

@@ -53,7 +53,7 @@ public class DBGJDBCWorker extends AbstractJob {
             monitor.subTask(sql);
             try (Statement stmt = session.createStatement()) {
                 debugSession.fireEvent(before);
-                stmt.executeQuery(sql);
+                stmt.execute(sql);
                 debugSession.fireEvent(after);
                 return Status.OK_STATUS;
             }