misc: Remove the sys/types.h include from various files

We used this include for the u_int{8,16,32}_t types but we do
not need this anymore.

src/msgb.c

@@ -22,7 +22,6 @@
 #include <unistd.h>
 #include <string.h>
 #include <stdlib.h>
-#include <sys/types.h>
 
 #include <osmocom/core/msgb.h>
 //#include <openbsc/gsm_data.h>

src/msgfile.c

@@ -24,7 +24,6 @@
 #include <osmocom/core/msgfile.h>
 #include <osmocom/core/talloc.h>
 
-#include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>

src/plugin.c

@@ -24,7 +24,6 @@
 
 #if HAVE_DLFCN_H
 
-#include <sys/types.h>
 #include <dirent.h>
 #include <dlfcn.h>
 #include <stdio.h>

src/process.c

@@ -23,7 +23,6 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <errno.h>
-#include <sys/types.h>
 #include <sys/stat.h>
 
 int osmo_daemonize(void)

src/statistics.c

@@ -20,7 +20,6 @@
  *
  */
 
-#include <sys/types.h>
 #include <string.h>
 
 #include <osmocom/core/linuxlist.h>

src/talloc.c

@@ -48,7 +48,6 @@
 
 #ifndef _TALLOC_SAMBA3
 //#include "replace.h"
-#include <sys/types.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <stdbool.h>

tests/sms/sms_test.c

@@ -22,7 +22,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/types.h>
 #include <osmocom/core/msgb.h>
 #include <osmocom/gsm/gsm_utils.h>
 #include <osmocom/core/utils.h>