samples: wifi: Disable rate limiting for Zperf

With the newly added ratelimiting the data path prints are rate limiited
but still visible on console (default interval is 1/5secs), but as we
know that nRF70 has many packet drops, disable the prints altogether.

Fix SHEL-3661.

Signed-off-by: Chaitanya Tata <[email protected]>

Author: krish2718

samples/wifi/shell/overlay-zperf.conf

@@ -31,3 +31,6 @@ CONFIG_FLASH=n
 CONFIG_NVS=n
 CONFIG_SETTINGS=n
 CONFIG_NRF70_UTIL=y
+
+# Disable rate limiting to avoid log flooding (default is drop)
+CONFIG_LOG_RATELIMIT=n

samples/wifi/sta/overlay-zperf.conf

@@ -19,3 +19,6 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_STATISTICS_WIFI=y
 CONFIG_NET_STATISTICS_USER_API=y
 CONFIG_SYS_HEAP_RUNTIME_STATS=y
+
+# Disable rate limiting to avoid log flooding (default is drop)
+CONFIG_LOG_RATELIMIT=n