MLECO-1898: removing support of legacy sse-200 platform

Signed-off-by: alexander <alexander.efremov@arm.com>
Change-Id: Ie462e786af1d429bcb815f2c10656ed82862715a
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d434c9e..7bc8d08 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -71,7 +71,7 @@
     mps3
     STRING)
 
-USER_OPTION(TARGET_SUBSYSTEM "Specify platform target subsystem: sse-200, sse-300 or none"
+USER_OPTION(TARGET_SUBSYSTEM "Specify platform target subsystem: sse-300 or none"
     sse-300
     STRING)