[PATCH 1/1] remove libravatar email filter

[Christian Hesse]

From: Christian Hesse <mail at eworm.de>

Looks like libravatar.org is going to shut down... So remove the filter.

https://blog.libravatar.org/posts/Libravatar.org_is_shutting_down_on_2018-09-01/
Signed-off-by: Christian Hesse <mail at eworm.de>
---
 filters/email-libravatar.lua | 27 ---------------------------
 1 file changed, 27 deletions(-)
 delete mode 100644 filters/email-libravatar.lua

diff --git a/filters/email-libravatar.lua b/filters/email-libravatar.lua
deleted file mode 100644
index b0e2447..0000000
--- a/filters/email-libravatar.lua
+++ /dev/null
@@ -1,27 +0,0 @@
--- This script may be used with the email-filter or repo.email-filter settings in cgitrc.
--- It adds libravatar icons to author names. It is designed to be used with the lua:
--- prefix in filters.
---
--- Requirements:
--- 	luacrypto >= 0.3
--- 	<http://mkottman.github.io/luacrypto/>
---
-
-local crypto = require("crypto")
-
-function filter_open(email, page)
-	buffer = ""
-	md5 = crypto.digest("md5", email:sub(2, -2):lower())
-end
-
-function filter_close()
-	baseurl = os.getenv("HTTPS") and "https://seccdn.libravatar.org/" or "http://cdn.libravatar.org/"
-	html("<img src='" .. baseurl .. "avatar/" .. md5 .. "?s=13&d=retro' width='13' height='13' alt='Libravatar' /> " .. buffer)
-	return 0
-end
-
-function filter_write(str)
-	buffer = buffer .. str
-end
-
-