Revert "docs: APP basic file structure"

This reverts commit 8f15feef614eac0265e39c325e03ae43c614968a.

Change-Id: I1581d10e297a234c2ab510c4f4c6aaf73f13eea7
diff --git a/docs/html/training/app/battery/index.jd b/docs/html/training/app/battery/index.jd
deleted file mode 100644
index c8445d7..0000000
--- a/docs/html/training/app/battery/index.jd
+++ /dev/null
@@ -1,4 +0,0 @@
-page.title=Optimizing Battery Life
-page.tags=battery
-
-@jd:body
diff --git a/docs/html/training/app/index.jd b/docs/html/training/app/index.jd
deleted file mode 100644
index 2675a78..0000000
--- a/docs/html/training/app/index.jd
+++ /dev/null
@@ -1,4 +0,0 @@
-page.title=Android Performance Patterns
-page.tags=app
-
-@jd:body
diff --git a/docs/html/training/app/rendering/index.jd b/docs/html/training/app/rendering/index.jd
deleted file mode 100644
index 733131e..0000000
--- a/docs/html/training/app/rendering/index.jd
+++ /dev/null
@@ -1,4 +0,0 @@
-page.title=Optimizing Rendering Performance
-page.tags=render
-
-@jd:body