Trim stub header comments and redundant explanations

- Drop the 'Stub file ... BUILD_RTI=OFF / Auto-generated' headers from the
  tab_* and pdm_* stub files (RTI is gone on this branch; the names say it)
- Drop stub comments from MockCoordTrans.h and the coordTransTests placeholders
- Drop the DDS exclusion list comment from Lts/Common/CMakeLists.txt
- Shorten the staging and packages-out comments in new_docker_build.sh

qt6-after/qt6-migrated-legatus/Lts/Proxies/TrainingAreaBase/stubs/tab_db_stub.hpp

@@ -1,5 +1,3 @@
-// Stub file for tab_db - BUILD_RTI=OFF
-// Auto-generated stub to replace RTI IDL-generated database code
 
 #ifndef TAB_DB_STUB_HPP
 #define TAB_DB_STUB_HPP

qt6-after/qt6-migrated-legatus/Lts/Proxies/TrainingAreaBase/stubs/tab_enums_stub.hpp

@@ -1,5 +1,3 @@
-// Stub file for tab_enums - BUILD_RTI=OFF
-// Auto-generated stub to replace RTI IDL-generated enums
 
 #ifndef TAB_ENUMS_STUB_HPP
 #define TAB_ENUMS_STUB_HPP

qt6-after/qt6-migrated-legatus/Lts/Proxies/TrainingAreaBase/stubs/tab_stub.hpp

@@ -1,6 +1,3 @@
-// Stub file for tab types - BUILD_RTI=OFF
-// Auto-generated stub to replace RTI IDL-generated types
-
 #ifndef TAB_STUB_HPP
 #define TAB_STUB_HPP
 

qt6-after/qt6-migrated-legatus/Lts/Proxies/TrainingAreaBase/stubs/tab_topic_type_plugin_stub.cpp

@@ -1,6 +1,3 @@
-// Stub file for tab_topic_type_plugin - BUILD_RTI=OFF
-// Auto-generated stub to replace RTI IDL-generated plugin code
-
 #include "tab_enums_stub.hpp"
 
 namespace tab