This reverts commit e5d7e688946a01c4c24568981fa7252aadf818b4.

No longer needed now that we have pkg.m4.

---
 configure.ac |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
diff --git a/configure.ac b/configure.ac
index 5be99fc..dc6c177 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2379,10 +2379,6 @@ case "$LIBIDN" in
        fi
 
        if test "x$idn" != "xyes"; then
-
-         dnl to prevent errors with pkg-config < 0.26
-         m4_pattern_allow(PKG_CONFIG_LIBDIR)
-
          dnl check with pkg-config
          PKG_CHECK_MODULES(LIBIDN_PC, libidn >= 0.0.0, [idn=yes], [idn=no])
          if test "x$idn" = "xyes"; then
-- 
1.7.7.3
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