utils/convolvtest: Remove uneeded libosmocore dependency

Change-Id: I1742146c31cadec8ce8afbbdae5777f076b212d4

utils/convolvetest/Makefile

@@ -1,5 +1,5 @@
 all: main.o convolve_base.o convolve.o convolve_sse_3.o
-	gcc -g -Wall ./*.o -o convtest -losmocore
+	gcc -g -Wall ./*.o -o convtest
 
 clean:
 	rm -f ./*.o

utils/convolvetest/main.c

@@ -1,6 +1,6 @@
 #include <stdio.h>
 #include <string.h>
-#include <osmocom/core/utils.h>
+#include <stdlib.h>
 #include "../../Transceiver52M/common/convolve.h"
 
 #define TESTVEC_LEN 1000