Only store what's used in SharedLibraryInfo

There was a reference to the static library provider, but only the
transitive static deps were used, so only store that part. Other members
were stored but unused anywhere.

Test: go test soong tests
Test: m nothing
Change-Id: I12a6b94806c052c3f0df3cab0a10f17042af1c38
diff --git a/cc/prebuilt.go b/cc/prebuilt.go
index bea1782..fd310a2 100644
--- a/cc/prebuilt.go
+++ b/cc/prebuilt.go
@@ -183,9 +183,8 @@
 			})
 
 			ctx.SetProvider(SharedLibraryInfoProvider, SharedLibraryInfo{
-				SharedLibrary:           outputFile,
-				UnstrippedSharedLibrary: p.unstrippedOutputFile,
-				Target:                  ctx.Target(),
+				SharedLibrary: outputFile,
+				Target:        ctx.Target(),
 
 				TableOfContents: p.tocFile,
 			})