tree-wide: drop unnecessary inclusion of version.h

src/test/test-cgroup-setup.c

@@ -9,7 +9,6 @@
 #include "proc-cmdline.h"
 #include "string-util.h"
 #include "tests.h"
-#include "version.h"
 
 static void test_is_wanted_print_one(bool header) {
         _cleanup_free_ char *cmdline = NULL;

src/test/test-cgroup-util.c

@@ -15,7 +15,6 @@
 #include "strv.h"
 #include "tests.h"
 #include "user-util.h"
-#include "version.h"
 
 static void check_p_d_u(const char *path, int code, const char *result) {
         _cleanup_free_ char *unit = NULL;