build: Remove __MUSL__ definition from configure

We stopped relying on this macro when we turned the funopen() cpp error
into a warning in commit e50896286cc5718898194edb73fa7262ad9a22db.

diff --git a/configure.ac b/configure.ac
index 7588a3b75b00c58767d7b9c7d4e827eb5c471e45..068bd92af09c0c34a3c7ef744488d89bb7a89c24 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -155,10 +155,6 @@ AS_CASE([$host_os],
     ])
     LIBS="$saved_LIBS"
   ],
-  [*-musl*], [
-    # Upstream refuses to define this, we will do it ourselves then.
-    AC_DEFINE([__MUSL__], [1], [Define to 1 if we are building for musl])
-  ],
   [mingw*], [
     is_windows=yes
   ],