removed unused env var SIGNER_APPROVAL_THRESHOLD

Author: wileyj

docker/docker-compose.yml

@@ -90,7 +90,6 @@ x-common-vars:
     - &STACKS_CORE_BASE_BRANCH ${STACKS_CORE_BASE_BRANCH:-3.2.0.0.1}
     - &PAUSE_HEIGHT ${PAUSE_HEIGHT:-999999999999}
     - &PAUSE_TIMER 86400000
-    - &SIGNER_APPROVAL_THRESHOLD 25
 
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