fix: remove unused env var (#669)

Author: razvan

rust/crd/src/lib.rs

@@ -604,7 +604,7 @@ impl DruidRole {
             {COMMON_BASH_TRAP_FUNCTIONS}
             {remove_vector_shutdown_file_command}
             prepare_signal_handlers
-            CONTAINERDEBUG_LOG_DIRECTORY={STACKABLE_LOG_DIR}/containerdebug containerdebug --output={STACKABLE_LOG_DIR}/containerdebug-state.json --loop &
+            containerdebug --output={STACKABLE_LOG_DIR}/containerdebug-state.json --loop &
             /stackable/druid/bin/run-druid {process_name} {RW_CONFIG_DIRECTORY} &
             echo \"$!\" >> /tmp/DRUID_PID
             wait_for_termination $(cat /tmp/DRUID_PID)