[NFC][libc] Remove ArrayRef which is replaced with span

Author: gchatelet

libc/src/__support/CPP/ArrayRef.h

@@ -20,12 +20,6 @@ add_header_library(
     .uint
 )
 
-add_header_library(
-  array_ref
-  HDRS
-    ArrayRef.h
-)
-
 add_header_library(
   bit
   HDRS

libc/src/__support/CPP/CMakeLists.txt

@@ -334,7 +334,7 @@ add_entrypoint_object(
     pthread_getname_np.h
   DEPENDS
     libc.include.pthread
-    libc.src.__support.CPP.array_ref
+    libc.src.__support.CPP.span
     libc.src.__support.CPP.stringstream
     libc.src.__support.threads.thread
 )

libc/src/pthread/CMakeLists.txt

@@ -31,16 +31,6 @@ add_libc_unittest(
     libc.src.__support.CPP.uint
 )
 
-add_libc_unittest(
-  arrayref_test
-  SUITE
-    libc_cpp_utils_unittests
-  SRCS
-    arrayref_test.cpp
-  DEPENDS
-    libc.src.__support.CPP.array_ref
-)
-
 add_libc_unittest(
   vector_test
   SUITE