[gn build] Port e406d5e

Author: llvmgnsyncbot

llvm/utils/gn/secondary/libcxx/include/BUILD.gn

@@ -142,23 +142,8 @@ if (current_toolchain == default_toolchain) {
       "__algorithm/partition_point.h",
       "__algorithm/pop_heap.h",
       "__algorithm/prev_permutation.h",
-      "__algorithm/pstl_any_all_none_of.h",
-      "__algorithm/pstl_copy.h",
-      "__algorithm/pstl_count.h",
-      "__algorithm/pstl_equal.h",
-      "__algorithm/pstl_fill.h",
-      "__algorithm/pstl_find.h",
-      "__algorithm/pstl_for_each.h",
+      "__algorithm/pstl.h",
       "__algorithm/pstl_frontend_dispatch.h",
-      "__algorithm/pstl_generate.h",
-      "__algorithm/pstl_is_partitioned.h",
-      "__algorithm/pstl_merge.h",
-      "__algorithm/pstl_move.h",
-      "__algorithm/pstl_replace.h",
-      "__algorithm/pstl_rotate_copy.h",
-      "__algorithm/pstl_sort.h",
-      "__algorithm/pstl_stable_sort.h",
-      "__algorithm/pstl_transform.h",
       "__algorithm/push_heap.h",
       "__algorithm/ranges_adjacent_find.h",
       "__algorithm/ranges_all_of.h",
@@ -647,8 +632,7 @@ if (current_toolchain == default_toolchain) {
       "__numeric/iota.h",
       "__numeric/midpoint.h",
       "__numeric/partial_sum.h",
-      "__numeric/pstl_reduce.h",
-      "__numeric/pstl_transform_reduce.h",
+      "__numeric/pstl.h",
       "__numeric/reduce.h",
       "__numeric/saturation_arithmetic.h",
       "__numeric/transform_exclusive_scan.h",