Delete all of templates-sdk/.
These files are now located in external/doclava/res/assets/
Related CLs:
https://googleplex-android-review.git.corp.google.com/#/c/1524290/
https://googleplex-android-review.git.corp.google.com/#/c/1928220/

Change-Id: Ia7dba884897c5b69243055190b6283537d35717f
diff --git a/tools/droiddoc/README b/tools/droiddoc/README
new file mode 100644
index 0000000..ef28e63
--- /dev/null
+++ b/tools/droiddoc/README
@@ -0,0 +1,5 @@
+If you're looking for the templates-sdk/ files, they've moved
+to external/doclava/res/assets/.
+
+The remaining template files here should also be eventually removed
+so that we can unify the structure and style of all DocLava builds.