Bug 1918711 - disable mlkem. r=keeler

Differential Revision: https://phabricator.services.mozilla.com/D222132

modules/libpref/init/StaticPrefList.yaml

@@ -13797,11 +13797,7 @@
 # Has no effect unless security.tls.enable_kyber is true.
 - name: network.http.http3.enable_kyber
   type: RelaxedAtomicBool
-#ifdef ANDROID
   value: false
-#else
-  value: @IS_NIGHTLY_BUILD@
-#endif
   mirror: always
   rust: true
 
@@ -15579,11 +15575,7 @@
 
 - name: security.tls.enable_kyber
   type: RelaxedAtomicBool
-#ifdef ANDROID
   value: false
-#else
-  value: @IS_NIGHTLY_BUILD@
-#endif
   mirror: always
   rust: true