diff --git a/dev-erlang/fast_yaml/files/fast_yaml-1.0.20-dont-escape-simple-quote.patch b/dev-erlang/fast_yaml/files/fast_yaml-1.0.20-dont-escape-simple-quote.patch
deleted file mode 100644
index 453374dbf175..000000000000
--- a/dev-erlang/fast_yaml/files/fast_yaml-1.0.20-dont-escape-simple-quote.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-From e789f68895f71b7ad31057177810ca0161bf790e Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Pawe=C5=82=20Chmielowski?= <pchmielowski@process-one.net>
-Date: Tue, 6 Aug 2019 12:37:28 +0200
-Subject: [PATCH] Don't escape ' inside "", this is not valid yaml
-
-This fixes issue #13
----
- src/fast_yaml.erl | 3 +--
- 1 file changed, 1 insertion(+), 2 deletions(-)
-
-diff --git a/src/fast_yaml.erl b/src/fast_yaml.erl
-index db2be4a..11e453c 100644
---- a/src/fast_yaml.erl
-+++ b/src/fast_yaml.erl
-@@ -146,7 +146,6 @@ encode(B, _) when is_binary(B) ->
-            ($\s) -> [$\s];  % $\s ==  "space"
-            ($\t) -> [$\\, "t"];  % $\t ==  "tab"
-            ($\v) -> [$\\, "v"];  % $\v ==  "vertical tab"
--           ($') -> [$\\, $'];    % $"  ==  simple quote
-            ($") -> [$\\, $"];    % $"  ==  double quote
-            ($\\) -> [$\\, $\\];  % $\\ ==  backslash
-           (C) -> C
-@@ -382,7 +381,7 @@ encode_decode_vertical_tab_test() ->
- 
- encode_decode_simple_quote_test() ->
-     FileName = filename:join(["..", "test", "temp_test.yml"]),
--    Binary = <<"\'\"\'">>,
-+    Binary = <<"'\"'">>,
-     Encoded = encode([[{'Source', Binary}]]),
-     file:write_file(FileName, Encoded),
-     Decoded = decode_from_file(FileName, [plain_as_atom]),