Merge #250: ci: Always define EXPERIMENTAL variable

7e91936 ci: Always define EXPERIMENTAL variable (Tim Ruffing)

Pull request description:

ACKs for top commit:
  jonasnick:
    ACK 7e91936

Tree-SHA512: d684ae76456a90b6bb8d215b108a420f6bb32800fe515a201de948366ffc9a1c33c7dd35a491db44f0db8b06c41c976ffe423bfccbab88b51bacbc23453992d1

Author: jonasnick

.cirrus.yml

@@ -14,6 +14,7 @@ env:
   WITH_VALGRIND: yes
   EXTRAFLAGS:
   ### secp256k1 modules
+  EXPERIMENTAL: no
   ECDH: no
   RECOVERY: no
   SCHNORRSIG: no