diff --git a/os/utf8proc/CMakeLists.txt b/os/utf8proc/CMakeLists.txt
deleted file mode 100644
index 2cbf603c2..000000000
--- a/os/utf8proc/CMakeLists.txt
+++ /dev/null
@@ -1,36 +0,0 @@
-cmake_minimum_required (VERSION 2.8)
-
-include (utils.cmake)
-
-# disallow_intree_builds()
-
-project (utf8proc C)
-
-# Be sure to also update these in Makefile!
-set(SO_MAJOR 1)
-set(SO_MINOR 3)
-set(SO_PATCH 0)
-
-add_definitions (
-  -DUTF8PROC_EXPORTS
-)
-
-if (NOT MSVC)
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -std=c99 -pedantic -Wall")
-endif ()
-
-add_library (utf8proc
-  utf8proc.c
-  utf8proc.h
-)
-
-set_target_properties (utf8proc PROPERTIES
-  POSITION_INDEPENDENT_CODE ON
-  VERSION "${SO_MAJOR}.${SO_MINOR}.${SO_PATCH}"
-  SOVERSION ${SO_MAJOR}
-)
-
-  set( CMAKE_REQUIRED_INCLUDES  ${READLINE_INCLUDE_DIR} ${CMAKE_REQUIRED_INCLUDES} )
-  set( CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} utf8proc )
-
-