Removed BUILTIN_CHANNELS

Building client channels out of tree does not work reliable as the
dependencies can not be easily split. (exceptions may be simple ones
as echo channel)
It does complicate the build system and code though, so remove this
for maintainability reasons.

channels/echo/client/CMakeLists.txt

@@ -25,9 +25,5 @@ include_directories(..)
 
 add_channel_client_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} TRUE "DVCPluginEntry")
 
-if (WITH_DEBUG_SYMBOLS AND MSVC AND NOT BUILTIN_CHANNELS AND BUILD_SHARED_LIBS)
-	install(FILES ${PROJECT_BINARY_DIR}/${MODULE_NAME}.pdb DESTINATION ${FREERDP_ADDIN_PATH} COMPONENT symbols)
-endif()
-
 target_link_libraries(${MODULE_NAME} winpr)
 set_property(TARGET ${MODULE_NAME} PROPERTY FOLDER "Channels/${CHANNEL_NAME}/Client")

channels/echo/client/echo_main.c

@@ -173,18 +173,12 @@ static UINT echo_plugin_terminated(IWTSPlugin* pPlugin)
 	return CHANNEL_RC_OK;
 }
 
-#ifdef BUILTIN_CHANNELS
-#define DVCPluginEntry echo_DVCPluginEntry
-#else
-#define DVCPluginEntry FREERDP_API DVCPluginEntry
-#endif
-
 /**
  * Function description
  *
  * @return 0 on success, otherwise a Win32 error code
  */
-UINT DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints)
+UINT echo_DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints)
 {
 	UINT status = CHANNEL_RC_OK;
 	ECHO_PLUGIN* echo;