Update posix.cfg

Remove <use-retval/> for setuid,seteuid,setgid,setegid

See 0a6babe#r42822000

Author: amai2012

cfg/posix.cfg

@@ -2334,7 +2334,6 @@ The function 'mktemp' is considered to be dangerous due to race conditions and s
   </function>
   <!-- int setuid(uid_t uid); -->
   <function name="setuid">
-    <use-retval/>
     <returnValue type="int"/>
     <noreturn>false</noreturn>
     <leak-ignore/>
@@ -2345,7 +2344,6 @@ The function 'mktemp' is considered to be dangerous due to race conditions and s
   </function>
   <!-- int seteuid(uid_t euid); -->
   <function name="seteuid">
-    <use-retval/>
     <returnValue type="int"/>
     <noreturn>false</noreturn>
     <leak-ignore/>
@@ -2356,7 +2354,6 @@ The function 'mktemp' is considered to be dangerous due to race conditions and s
   </function>
   <!-- int setgid(gid_t gid); -->
   <function name="setgid">
-    <use-retval/>
     <returnValue type="int"/>
     <noreturn>false</noreturn>
     <leak-ignore/>
@@ -2367,7 +2364,6 @@ The function 'mktemp' is considered to be dangerous due to race conditions and s
   </function>
   <!-- int setegid(gid_t egid); -->
   <function name="setegid">
-    <use-retval/>
     <returnValue type="int"/>
     <noreturn>false</noreturn>
     <leak-ignore/>