disable a whole lot of things we don't need to build

src/Package/Library/ngtcp2.php

@@ -25,6 +25,7 @@ class ngtcp2
                 '-DENABLE_STATIC_CRT=ON',
                 '-DENABLE_LIB_ONLY=ON',
                 '-DENABLE_OPENSSL=OFF',
+                '-DBUILD_TESTING=OFF',
             )
             ->build();
     }