diff --git a/extra/json-c/build b/extra/json-c/build
deleted file mode 100755
index 6daf22f8..00000000
--- a/extra/json-c/build
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/sh -e
-
-./configure \
-    --prefix=/usr
-
-make
-make DESTDIR="$1" install
diff --git a/extra/json-c/checksums b/extra/json-c/checksums
deleted file mode 100644
index 19095f80..00000000
--- a/extra/json-c/checksums
+++ /dev/null
@@ -1 +0,0 @@
-b87e608d4d3f7bfdd36ef78d56d53c74e66ab278d318b71e6002a369d36f4873  json-c-0.13.1.tar.gz
diff --git a/extra/json-c/depends b/extra/json-c/depends
deleted file mode 100644
index 71f0d53c..00000000
--- a/extra/json-c/depends
+++ /dev/null
@@ -1 +0,0 @@
-automake make
diff --git a/extra/json-c/sources b/extra/json-c/sources
deleted file mode 100644
index 1e88a0fd..00000000
--- a/extra/json-c/sources
+++ /dev/null
@@ -1 +0,0 @@
-https://s3.amazonaws.com/json-c_releases/releases/json-c-0.13.1.tar.gz
diff --git a/extra/json-c/version b/extra/json-c/version
deleted file mode 100644
index f3567879..00000000
--- a/extra/json-c/version
+++ /dev/null
@@ -1 +0,0 @@
-0.13.1 2