runtests: drop unused code for old/classic-mingw support

Follow-up to 38029101e2d78ba125732b3bab6ec267b80a0e72 #11625

Closes #15087

diff --git a/tests/runtests.pl b/tests/runtests.pl
index 228a5cc4e6ff65daa061dc21a096d68e46658522..ae53f0e5fae13611f3a3f2de0425b0085b6e6a86 100755 (executable)
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -540,8 +540,6 @@ sub checksystemfeatures {
                 # Windows-style path.
                 $pwd = sys_native_current_path();
                 $feature{"win32"} = 1;
-                # set if built with MinGW (as opposed to MinGW-w64)
-                $feature{"MinGW"} = 1 if ($curl =~ /-pc-mingw32/);
             }
             if ($libcurl =~ /\s(winssl|schannel)\b/i) {
                 $feature{"Schannel"} = 1;