[assembly] Remove unused sbase shell package

Bug: b/308694417
Change-Id: I4ee0834d373948fdb92a613c95a55a8318e28ba1
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/sbase/+/947768
Reviewed-by: David Iserovich <diserovich@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 43a7332..7219df7 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -45,10 +45,6 @@
     package_name = bin
     deps = [ ":${bin}_bin" ]
   }
-
-  fuchsia_shell_package(bin) {
-    deps = [ ":${bin}_bin" ]
-  }
 }
 
 group("sbase-pkgs") {
@@ -57,10 +53,3 @@
     deps += [ ":${bin}_pkg" ]
   }
 }
-
-group("sbase") {
-  deps = []
-  foreach(bin, sbase_binaries) {
-    deps += [ ":$bin" ]
-  }
-}