diff --git a/doc/sh.css b/doc/sh.css
deleted file mode 100644
index 7022e199de673e..00000000000000
--- a/doc/sh.css
+++ /dev/null
@@ -1,24 +0,0 @@
-.sh_sourceCode {
-  font-weight: normal;
-  font-style: normal;
-}
-
-.sh_sourceCode .sh_symbol,
-.sh_sourceCode .sh_cbracket {
-  color: #333;
-}
-
-.sh_sourceCode .sh_keyword {
-  color: #c96;
-}
-
-.sh_sourceCode .sh_string,
-.sh_sourceCode .sh_regexp,
-.sh_sourceCode .sh_number,
-.sh_sourceCode .sh_specialchar {
-  color: #690;
-}
-
-.sh_sourceCode .sh_comment {
-  color: #666;
-}
diff --git a/doc/sh_vim-dark.css b/doc/sh_vim-dark.css
deleted file mode 100644
index 42b74f44d6177b..00000000000000
--- a/doc/sh_vim-dark.css
+++ /dev/null
@@ -1,33 +0,0 @@
-.sh_sourceCode {
-  font-weight: normal;
-  font-style: normal;
-}
-
-.sh_sourceCode .sh_symbol ,
-.sh_sourceCode .sh_cbracket {
-  color: #fff;
-}
-
-.sh_sourceCode .sh_keyword {
-  font-style: italic;
-}
-
-.sh_sourceCode .sh_string,
-.sh_sourceCode .sh_regexp,
-.sh_sourceCode .sh_number,
-.sh_sourceCode .sh_specialchar {
-  color: #a0c874;
-}
-
-.sh_sourceCode .sh_comment {
-  color: #777;
-}
-
-.alt .sh_sourceCode .sh_keyword {
-  font-style: normal;
-  color: #996633;
-}
-
-.alt .sh_sourceCode .sh_symbol , .alt .sh_sourceCode .sh_cbracket {
-  color: #46483e;
-}