Revert "configure: Detect fat contribs."

This reverts commit 65ed93af.

configure.ac

@@ -125,15 +125,11 @@ AC_ARG_WITH(contrib,
       if test "`echo \"$topdir\" | cut -c 1`" != "/"; then
          topdir="`pwd`/$topdir"
       fi
-      CONTRIB_DIR=${topdir}/extras/contrib/hosts/fat
+      CONTRIB_DIR=${topdir}/extras/contrib/hosts/${host}
       if ! test -d "$CONTRIB_DIR"
       then
-          CONTRIB_DIR=${topdir}/extras/contrib/hosts/${host}
-          if ! test -d "$CONTRIB_DIR"
-          then
-            gccmachine=`$CC -dumpmachine`
-            CONTRIB_DIR=${topdir}/extras/contrib/hosts/${gccmachine}
-          fi
+        gccmachine=`$CC -dumpmachine`
+        CONTRIB_DIR=${topdir}/extras/contrib/hosts/${gccmachine}
       fi
     fi
     AC_MSG_CHECKING([for libs in ${CONTRIB_DIR}])