configure: remove CURL_DISABLE_TLS_SRP

It isn't used by code so stop providing the define.

Closes #4010

diff --git a/configure.ac b/configure.ac
index fb14e0337a3dc64f26a679a051847b9020fb253d..9b69e1bb48916a09be4fc4397293e19d9bcd9346 100755 (executable)
--- a/configure.ac
+++ b/configure.ac
@@ -3957,7 +3957,6 @@ AC_HELP_STRING([--disable-tls-srp],[Disable TLS-SRP authentication]),
 [ case "$enableval" in
   no)
        AC_MSG_RESULT(no)
-       AC_DEFINE(CURL_DISABLE_TLS_SRP, 1, [to disable TLS-SRP authentication])
        want_tls_srp=no
        ;;
   *)   AC_MSG_RESULT(yes)