FP4: gps: Resolve unused parameter warnings

Change-Id: I0acef3da2c3567a28edd0a71dac89a5828f7725d
diff --git a/gps/utils/loc_log.cpp b/gps/utils/loc_log.cpp
index 2110683..cf566f7 100644
--- a/gps/utils/loc_log.cpp
+++ b/gps/utils/loc_log.cpp
@@ -220,7 +220,7 @@
    N/A
 
 ===========================================================================*/
-void log_buffer_insert(char *str, unsigned long buf_size, int level)
+void log_buffer_insert(char *str, unsigned long buf_size __unused, int level)
 {
     timespec tv;
     clock_gettime(CLOCK_BOOTTIME, &tv);