Removes $(PRODUCT_OUT)/misc_info.txt on installclean.

misc_info.txt's build rule does not contain inputs to tell it to
refresh on an incremental build, so incremental builds (even after
installclean) were reusing this file.

With this change, misc_info.txt is removed by installclean so that an
incremental build generates the file fresh.

Test: # misc_info.txt exists; m installclean; # misc_info.txt gone
Bug: 155930200
Change-Id: Ia319925dad26f98049a988ee1ceb1e20db621353
diff --git a/ui/build/cleanbuild.go b/ui/build/cleanbuild.go
index 0bcdccb..e1123e0 100644
--- a/ui/build/cleanbuild.go
+++ b/ui/build/cleanbuild.go
@@ -104,6 +104,7 @@
 		productOut("*.img"),
 		productOut("*.zip"),
 		productOut("android-info.txt"),
+		productOut("misc_info.txt"),
 		productOut("apex"),
 		productOut("kernel"),
 		productOut("data"),