CONFIGS: Removes Musca S1 and Laird BL5340

Removes all references to building Musca S1 and Lairdconnect BL5340
ahead of their deprecation from the trusted-firmware-m repo.

Change-Id: I6ba5b49feaf54d5de6101d2995e27d8614391230
Signed-off-by: Matthew Dalzell <matthew.dalzell@arm.com>
diff --git a/script/tf-coverity/cov-makefile b/script/tf-coverity/cov-makefile
index 506a29e..385b960 100644
--- a/script/tf-coverity/cov-makefile
+++ b/script/tf-coverity/cov-makefile
@@ -16,7 +16,7 @@
 target_platforms := cypress/psoc64 \
                     arm/mps2/an519 arm/mps2/an521 \
                     arm/mps3/an524 \
-                    arm/musca_b1 arm/musca_s1 \
+                    arm/musca_b1 \
                     stm/stm32l562e_dk
 
 tf_m := trusted-firmware-m