Remove EOL 3.1

Author: yosifkit

3.1/Dockerfile

@@ -121,7 +121,7 @@ RUN set -eux; \
 		USE_PROMEX=1 \
 		# https://github.com/haproxy/haproxy/blob/a203ce685464988afbd92c8a376fcafae9bab5b5/INSTALL#L368-L373
 		USE_PTHREAD_EMULATION=1 \
-{{ if env.version | IN("2.4", "2.6", "2.8", "3.0", "3.1") then "" else ( -}}
+{{ if env.version | IN("2.4", "2.6", "2.8", "3.0") then "" else ( -}}
 		# https://www.haproxy.com/blog/announcing-haproxy-3-2#quic-protocol
 		# [in 3.2] QUIC TLS API was ported to OpenSSL 3.5
 		# Openssl 3.5+ is available on Debian Trixie and Alpine 3.22 and newer

3.1/alpine/Dockerfile

@@ -27,13 +27,6 @@
     "url": "https://www.haproxy.org/download/3.0/src/haproxy-3.0.20.tar.gz",
     "version": "3.0.20"
   },
-  "3.1": {
-    "alpine": "3.23",
-    "debian": "trixie-slim",
-    "sha256": "5f875a297032bb68f100363d034574694313a59fc5b699adf647063bbfe5e7a7",
-    "url": "https://www.haproxy.org/download/3.1/src/haproxy-3.1.17.tar.gz",
-    "version": "3.1.17"
-  },
   "3.2": {
     "alpine": "3.23",
     "debian": "trixie-slim",