pn54x: Remove unused variables

Follow-up to commit 064f9628367aa8ae383133f9eaa081248ab2c241.

Bug: 66996870
Test: mmma system/nfc/halimpl/pn54x
Exempt-From-Owner-Approval: Build fix
Change-Id: I8e97a7312cb2d84de9945fa242718fdfa367a885
diff --git a/halimpl/pn54x/hal/phNxpNciHal.c b/halimpl/pn54x/hal/phNxpNciHal.c
index 9b92a8e..e5f1b4a 100644
--- a/halimpl/pn54x/hal/phNxpNciHal.c
+++ b/halimpl/pn54x/hal/phNxpNciHal.c
@@ -2554,9 +2554,6 @@
 NFCSTATUS phNxpNciHal_core_reset_recovery() {
   NFCSTATUS status = NFCSTATUS_FAILED;
 
-  uint8_t buffer[260];
-  long bufflen = 260;
-
   /*NCI_INIT_CMD*/
   static uint8_t cmd_init_nci[] = {0x20, 0x01, 0x00};
   /*NCI_RESET_CMD*/