[PATCH v2 05/12] git-curl-compat: remove check for curl 7.43.0

["brian m. carlson" <sandals@xxxxxxxxxxxxxxxxxxxx>]

libcurl 7.43.0 was released in June 2015, which is over nine years
ago, and no major operating system vendor is still providing security
support for it.  Debian 9 and Ubuntu 16.04, 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 <sandals@xxxxxxxxxxxxxxxxxxxx>
---
 git-curl-compat.h | 11 -----------
 http.c            |  5 -----
 2 files changed, 16 deletions(-)

diff --git a/git-curl-compat.h b/git-curl-compat.h
index b301ef154c..cd970e34d6 100644
--- a/git-curl-compat.h
+++ b/git-curl-compat.h
@@ -28,17 +28,6 @@
  * introduced, oldest first, in the official version of cURL library.
  */
 
-/**
- * CURL_HTTP_VERSION_2 was added in 7.43.0, released in June 2015.
- *
- * The CURL_HTTP_VERSION_2 alias (but not CURL_HTTP_VERSION_2_0) has
- * always been a macro, not an enum field (checked on curl version
- * 7.78.0)
- */
-#if LIBCURL_VERSION_NUM >= 0x072b00
-#define GIT_CURL_HAVE_CURL_HTTP_VERSION_2 1
-#endif
-
 /**
  * CURLSSLOPT_NO_REVOKE was added in 7.44.0, released in August 2015.
  *
diff --git a/http.c b/http.c
index cdef059090..945df9a628 100644
--- a/http.c
+++ b/http.c
@@ -980,7 +980,6 @@ static long get_curl_allowed_protocols(int from_user, struct strbuf *list)
 	return bits;
 }
 
-#ifdef GIT_CURL_HAVE_CURL_HTTP_VERSION_2
 static int get_curl_http_version_opt(const char *version_string, long *opt)
 {
 	int i;
@@ -1003,8 +1002,6 @@ static int get_curl_http_version_opt(const char *version_string, long *opt)
 	return -1; /* not found */
 }
 
-#endif
-
 static CURL *get_curl_handle(void)
 {
 	CURL *result = curl_easy_init();
@@ -1022,7 +1019,6 @@ static CURL *get_curl_handle(void)
 		curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
 	}
 
-#ifdef GIT_CURL_HAVE_CURL_HTTP_VERSION_2
     if (curl_http_version) {
 		long opt;
 		if (!get_curl_http_version_opt(curl_http_version, &opt)) {
@@ -1030,7 +1026,6 @@ static CURL *get_curl_handle(void)
 			curl_easy_setopt(result, CURLOPT_HTTP_VERSION, opt);
 		}
     }
-#endif
 
 	curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
 	curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);