Checks: run gateway tests only in Nix CI

What: drop unit test suite from gateway-tests check; run only gateway config
Why: keep Garnix + Cache Only fast (~30s) while upstream CI covers unit tests
Tests: not run (CI config change)

Author: DJTBOT

nix/scripts/gateway-tests-check.sh

@@ -18,13 +18,6 @@ mkdir -p "$MOLTBOT_LOG_DIR"
 mkdir -p /tmp/moltbot || true
 chmod 700 /tmp/moltbot || true
 export VITEST_POOL="threads"
-export VITEST_MIN_THREADS="1"
-export VITEST_MAX_THREADS="1"
-export VITEST_MIN_WORKERS="1"
-export VITEST_MAX_WORKERS="1"
-
-pnpm vitest run --config vitest.unit.config.ts --testTimeout=20000
-
 export VITEST_MIN_THREADS="2"
 export VITEST_MAX_THREADS="2"
 export VITEST_MIN_WORKERS="2"