add the fixed

.github/workflows/action.yml

@@ -49,7 +49,6 @@ jobs:
          - {RTT_BSP: "tm4c123bsp", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "tm4c129x", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "lpc43xx/M4", RTT_TOOL_CHAIN: "sourcery-arm"}
-         - {RTT_BSP: "lpc55sxx", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "lpc176x", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "lpc178x", RTT_TOOL_CHAIN: "sourcery-arm"}
          - {RTT_BSP: "lpc408x", RTT_TOOL_CHAIN: "sourcery-arm"}