Do not check for installed libaec. It breaks some dependency when building.

7d890ee5 · Mathis Rosenhauer · 7b2c73dd · 7d890ee5
Commit 7d890ee5 authored Jul 30, 2014 by Mathis Rosenhauer
--- a/configure.ac
+++ b/configure.ac
@@ -13,9 +13,6 @@ AM_INIT_AUTOMAKE
 # Checks for programs.
 AC_PROG_CC
-# Checks for libraries.
-AC_CHECK_LIB([aec], [aec_decode])
 # Checks for header files.
 AC_HEADER_STDC