Remove LOAD_BALANCER from system setup env

Author: NoahStapp

.evergreen/config.yml

@@ -228,7 +228,7 @@ functions:
     - command: subprocess.exec
       params:
         binary: bash
-        include_expansions_in_env: ["VERSION", "TOPOLOGY", "ORCHESTRATION_FILE"]
+        include_expansions_in_env: ["VERSION", "TOPOLOGY", "ORCHESTRATION_FILE", "LOAD_BALANCER"]
         args:
           - src/.evergreen/scripts/run-with-env.sh
           - src/.evergreen/scripts/bootstrap-mongo-orchestration.sh

.evergreen/scripts/configure-env.sh

@@ -55,7 +55,6 @@ export SKIP_HATCH="${SKIP_HATCH:-}"
 export skip_crypt_shared="${skip_crypt_shared:-}"
 export STORAGE_ENGINE="${STORAGE_ENGINE:-}"
 export REQUIRE_API_VERSION="${REQUIRE_API_VERSION:-}"
-export LOAD_BALANCER="${LOAD_BALANCER:-}"
 
 export TMPDIR="$MONGO_ORCHESTRATION_HOME/db"
 export PATH="$MONGODB_BINARIES:$PATH"