Remove S codename from sc-v2-dev

S was finalized, it shouldn't be listed as an active codename any
more.

Bug: 193674948
Test: treehugger
Change-Id: I4cce94b0ea4865a5248ab106edce8fa165390005
Merged-In: Ie5ee4479ba98b9f4525b36e38493879a15661905
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 347f29f..cd4947d 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -93,7 +93,6 @@
 
 # These are the current development codenames, if the build is not a final
 # release build.  If this is a final release build, it is simply "REL".
-PLATFORM_VERSION_CODENAME.SP1A := S
 PLATFORM_VERSION_CODENAME.SP2A := Sv2
 
 ifndef PLATFORM_VERSION_CODENAME