diff --git a/extra/cel-shading/authors.txt b/extra/cel-shading/authors.txt
deleted file mode 100644
index 6a0dc7293a..0000000000
--- a/extra/cel-shading/authors.txt
+++ /dev/null
@@ -1 +0,0 @@
-Joe Groff
\ No newline at end of file
diff --git a/extra/cel-shading/summary.txt b/extra/cel-shading/summary.txt
deleted file mode 100644
index 60da092f6d..0000000000
--- a/extra/cel-shading/summary.txt
+++ /dev/null
@@ -1 +0,0 @@
-Stanford Bunny rendered with a cel-shading GLSL program
\ No newline at end of file
diff --git a/extra/cel-shading/tags.txt b/extra/cel-shading/tags.txt
deleted file mode 100644
index 0db7e8e629..0000000000
--- a/extra/cel-shading/tags.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-demos
-opengl
-glsl
\ No newline at end of file