Remove system shared libs from non-bionic dep list

bionic system shared libraries only build for bionic platforms, so it is
safe to remove them from other platforms, preventing issues where
duplicate libraries are incorrectly identified in Bazel.

Test: go test soong tests
Change-Id: Idac27c49a464831f8aca02d561f41f98fc763337
diff --git a/bp2build/cc_library_static_conversion_test.go b/bp2build/cc_library_static_conversion_test.go
index 0e47ee8..0637ba2 100644
--- a/bp2build/cc_library_static_conversion_test.go
+++ b/bp2build/cc_library_static_conversion_test.go
@@ -1419,13 +1419,7 @@
 }
 `,
 		ExpectedBazelTargets: []string{
-			MakeBazelTarget("cc_library_static", "all", AttrNameToString{
-				"implementation_dynamic_deps": `select({
-        "//build/bazel/platforms/os:android": [],
-        "//build/bazel/platforms/os:linux_bionic": [],
-        "//conditions:default": [":libc"],
-    })`,
-			}),
+			MakeBazelTarget("cc_library_static", "all", AttrNameToString{}),
 			MakeBazelTarget("cc_library_static", "keep_for_empty_system_shared_libs", AttrNameToString{
 				"implementation_dynamic_deps": `[":libc"]`,
 				"system_dynamic_deps":         `[]`,