Revert "[libc][POSIX][pthreads] implemented missing pthread_rwlockattr functions" (#91966)

Reverts #90249

Fullbuild is broken:
https://lab.llvm.org/buildbot/#/builders/163/builds/56501

Author: SchrodingerZhu

libc/config/linux/x86_64/entrypoints.txt

@@ -673,10 +673,8 @@ if(LLVM_LIBC_FULL_BUILD)
     libc.src.pthread.pthread_mutexattr_settype
     libc.src.pthread.pthread_once
     libc.src.pthread.pthread_rwlockattr_destroy
-    libc.src.pthread.pthread_rwlockattr_getkind_np
     libc.src.pthread.pthread_rwlockattr_getpshared
     libc.src.pthread.pthread_rwlockattr_init
-    libc.src.pthread.pthread_rwlockattr_setkind_np
     libc.src.pthread.pthread_rwlockattr_setpshared
     libc.src.pthread.pthread_setspecific
 

libc/include/pthread.h.def

@@ -38,11 +38,6 @@ enum {
 #define PTHREAD_PROCESS_PRIVATE 0
 #define PTHREAD_PROCESS_SHARED 1
 
-#define PTHREAD_RWLOCK_PREFER_READER_NP 0
-#define PTHREAD_RWLOCK_PREFER_WRITER_NP 1
-#define PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP 2
-
-
 %%public_api()
 
 #endif // LLVM_LIBC_PTHREAD_H

libc/spec/posix.td

@@ -1234,11 +1234,6 @@ def POSIX : StandardSpec<"POSIX"> {
           RetValSpec<IntType>,
           [ArgSpec<PThreadRWLockAttrTPtr>]
       >,
-      FunctionSpec<
-          "pthread_rwlockattr_getkind_np",
-          RetValSpec<IntType>,
-          [ArgSpec<PThreadRWLockAttrTPtr>, ArgSpec<IntPtr>]
-      >,
       FunctionSpec<
           "pthread_rwlockattr_getpshared",
           RetValSpec<IntType>,
@@ -1249,11 +1244,6 @@ def POSIX : StandardSpec<"POSIX"> {
           RetValSpec<IntType>,
           [ArgSpec<PThreadRWLockAttrTPtr>]
       >,
-      FunctionSpec<
-          "pthread_rwlockattr_setkind_np",
-          RetValSpec<IntType>,
-          [ArgSpec<PThreadRWLockAttrTPtr>, ArgSpec<IntType>]
-      >,
       FunctionSpec<
           "pthread_rwlockattr_setpshared",
           RetValSpec<IntType>,

libc/src/pthread/CMakeLists.txt

@@ -470,16 +470,6 @@ add_entrypoint_object(
     libc.include.pthread
 )
 
-add_entrypoint_object(
-  pthread_rwlockattr_getkind_np
-  SRCS
-    pthread_rwlockattr_getkind_np.cpp
-  HDRS
-    pthread_rwlockattr_getkind_np.h
-  DEPENDS
-    libc.include.pthread
-)
-
 add_entrypoint_object(
   pthread_rwlockattr_getpshared
   SRCS
@@ -500,17 +490,6 @@ add_entrypoint_object(
     libc.include.pthread
 )
 
-add_entrypoint_object(
-  pthread_rwlockattr_setkind_np
-  SRCS
-    pthread_rwlockattr_setkind_np.cpp
-  HDRS
-    pthread_rwlockattr_setkind_np.h
-  DEPENDS
-    libc.include.pthread
-    libc.include.errno
-)
-
 add_entrypoint_object(
   pthread_rwlockattr_setpshared
   SRCS

libc/src/pthread/pthread_rwlockattr_getkind_np.cpp

@@ -17,7 +17,6 @@ namespace LIBC_NAMESPACE {
 LLVM_LIBC_FUNCTION(int, pthread_rwlockattr_init,
                    (pthread_rwlockattr_t * attr)) {
   attr->pshared = PTHREAD_PROCESS_PRIVATE;
-  attr->pref = PTHREAD_RWLOCK_PREFER_READER_NP;
   return 0;
 }
 

libc/src/pthread/pthread_rwlockattr_getkind_np.h

@@ -68,9 +68,7 @@ add_libc_unittest(
     libc.include.errno
     libc.include.pthread
     libc.src.pthread.pthread_rwlockattr_destroy
-    libc.src.pthread.pthread_rwlockattr_getkind_np
     libc.src.pthread.pthread_rwlockattr_getpshared
     libc.src.pthread.pthread_rwlockattr_init
-    libc.src.pthread.pthread_rwlockattr_setkind_np
     libc.src.pthread.pthread_rwlockattr_setpshared
 )