Remove problematic test callback

Jan Breuer

2015-04-14 d811ac6da4ab97088f7560b7999449ecd9b1d81f

 examples/common/scpi-def.cpp

@@ -150,7 +150,6 @@
    /* control */ SCPI_Control,
    /* flush */ SCPI_Flush,
    /* reset */ SCPI_Reset,
    /* test */ SCPI_Test,
};

#define SCPI_INPUT_BUFFER_LENGTH 256