Remove table for all supported chips as useless.

tools/test_apps/system/panic/README.md

@@ -1,6 +1,3 @@
-| Supported Targets | ESP32 | ESP32-S2 | ESP32-S3 | ESP32-C3 | ESP32-H2 |
-| ----------------- | ----- | -------- | -------- | -------- | -------- |
-
 # Building
 Several configurations are provided as `sdkconfig.ci.XXX` and serve as a template.