git-curl-compat: remove check for curl 7.34.0

libcurl 7.34.0 was released in December 2013, which is well over ten
years ago, and no major operating system vendor is still providing
security support for it.  Debian 8 and Ubuntu 14.04, both of which are
out of mainstream security support, have supported a newer version, and
RHEL 8, which is still in support, also has a newer version.

Remove the check for this version and use this functionality
unconditionally.

Signed-off-by: brian m. carlson <[email protected]>
Signed-off-by: Taylor Blau <[email protected]>

Author: bk2204

git-curl-compat.h

@@ -28,28 +28,6 @@
  * introduced, oldest first, in the official version of cURL library.
  */
 
-/**
- * CURLOPT_LOGIN_OPTIONS was added in 7.34.0, released in December
- * 2013.
- *
- * If we start requiring 7.34.0 we might also be able to remove the
- * code conditional on USE_CURL_FOR_IMAP_SEND in imap-send.c, see
- * 1e16b255b95 (git-imap-send: use libcurl for implementation,
- * 2014-11-09) and the check it added for "072200" in the Makefile.
-
- */
-#if LIBCURL_VERSION_NUM >= 0x072200
-#define GIT_CURL_HAVE_CURLOPT_LOGIN_OPTIONS 1
-#endif
-
-/**
- * CURL_SSLVERSION_TLSv1_[012] was added in 7.34.0, released in
- * December 2013.
- */
-#if LIBCURL_VERSION_NUM >= 0x072200
-#define GIT_CURL_HAVE_CURL_SSLVERSION_TLSv1_0
-#endif
-
 /**
  * CURLOPT_PINNEDPUBLICKEY was added in 7.39.0, released in November
  * 2014. CURLE_SSL_PINNEDPUBKEYNOTMATCH was added in that same version.

http.c

@@ -52,11 +52,9 @@ static struct {
 	{ "sslv2", CURL_SSLVERSION_SSLv2 },
 	{ "sslv3", CURL_SSLVERSION_SSLv3 },
 	{ "tlsv1", CURL_SSLVERSION_TLSv1 },
-#ifdef GIT_CURL_HAVE_CURL_SSLVERSION_TLSv1_0
 	{ "tlsv1.0", CURL_SSLVERSION_TLSv1_0 },
 	{ "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
 	{ "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
-#endif
 #ifdef GIT_CURL_HAVE_CURL_SSLVERSION_TLSv1_3
 	{ "tlsv1.3", CURL_SSLVERSION_TLSv1_3 },
 #endif

imap-send.c

@@ -1417,15 +1417,11 @@ static CURL *setup_curl(struct imap_server_conf *srvc, struct credential *cred)
 	curl_easy_setopt(curl, CURLOPT_PORT, srvc->port);
 
 	if (srvc->auth_method) {
-#ifndef GIT_CURL_HAVE_CURLOPT_LOGIN_OPTIONS
-		warning("No LOGIN_OPTIONS support in this cURL version");
-#else
 		struct strbuf auth = STRBUF_INIT;
 		strbuf_addstr(&auth, "AUTH=");
 		strbuf_addstr(&auth, srvc->auth_method);
 		curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
 		strbuf_release(&auth);
-#endif
 	}
 
 	if (!srvc->use_ssl)