Remove unused encrypted variables (#1298)

Author: collinjackson

.cirrus.yml

@@ -39,7 +39,6 @@ task:
         matrix:
           CHANNEL: "master"
           CHANNEL: "stable"
-        MAPS_API_KEY: ENCRYPTED[596a9f6bca436694625ac50851dc5da6b4d34cba8025f7db5bc9465142e8cd44e15f69e3507787753accebfc4910d550]
         GCLOUD_FIREBASE_TESTLAB_KEY: ENCRYPTED[fd81ffb7c44af2f8a1ae55e470c69690c1ec7e90aba49d18635fa4f3c72b6807034287e9e697f64e37ab836a66ba9eab]
       script:
         - flutter channel $CHANNEL
@@ -92,7 +91,6 @@ task:
         matrix:
           CHANNEL: "master"
           CHANNEL: "stable"
-        SIMCTL_CHILD_MAPS_API_KEY: ENCRYPTED[596a9f6bca436694625ac50851dc5da6b4d34cba8025f7db5bc9465142e8cd44e15f69e3507787753accebfc4910d550]
       build_script:
         - flutter channel $CHANNEL
         - ./script/incremental_build.sh build-examples --ipa