No SERIAL_STATS for LPC, STM32 (#18145)

Marlin/src/HAL/STM32F1/inc/SanityCheck.h

@@ -49,3 +49,11 @@
   #endif
   #error "SDCARD_EEPROM_EMULATION requires SDSUPPORT. Enable SDSUPPORT or choose another EEPROM emulation."
 #endif
+
+#if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
+  #error "SERIAL_STATS_MAX_RX_QUEUED is not supported on this platform."
+#endif
+
+#if ENABLED(SERIAL_STATS_DROPPED_RX)
+  #error "SERIAL_STATS_DROPPED_RX is not supported on this platform."
+#endif