style: adjust clang-format rules (#2186)

Co-authored-by: Vithorio Polten <reach@vithor.io>

tests/tests_environment.h

@@ -6,14 +6,12 @@
 #include "tests_common.h"
 
 struct SunshineEnvironment: testing::Environment {
-  void
-  SetUp() override {
+  void SetUp() override {
     mail::man = std::make_shared<safe::mail_raw_t>();
     deinit_log = logging::init(0, "test_sunshine.log");
   }
 
-  void
-  TearDown() override {
+  void TearDown() override {
     deinit_log = {};
     mail::man = {};
   }