fix(json): Remove FQBNs for the test

Author: lucasssvaz

tests/validation/psram/ci.json

@@ -1,16 +1,4 @@
 {
-  "fqbn": {
-    "esp32": [
-      "espressif:esp32:esp32:PSRAM=enabled"
-    ],
-    "esp32s2": [
-      "espressif:esp32:esp32s2:PSRAM=enabled"
-    ],
-    "esp32s3": [
-      "espressif:esp32:esp32s3:PSRAM=opi,USBMode=default",
-      "espressif:esp32:esp32s3:PSRAM=enabled,USBMode=default"
-    ]
-  },
   "platforms": {
     "qemu": false,
     "wokwi": false