Based off of Swift 6.3.2 sources.

diff --git a/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp b/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
index ea8cc30..88eccec 100644
--- a/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
+++ b/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
@@ -157,7 +157,6 @@ typedef struct user_fpregs elf_fpregset_t;
 #include <linux/lp.h>
 #include <linux/mroute.h>
 #include <linux/mroute6.h>
-#include <linux/scc.h>
 #include <linux/serial.h>
 #include <sys/msg.h>
 #include <sys/ipc.h>
@@ -532,8 +531,6 @@ unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
   unsigned struct_kbsentry_sz = sizeof(struct kbsentry);
   unsigned struct_mtconfiginfo_sz = sizeof(struct mtconfiginfo);
   unsigned struct_nr_parms_struct_sz = sizeof(struct nr_parms_struct);
-  unsigned struct_scc_modem_sz = sizeof(struct scc_modem);
-  unsigned struct_scc_stat_sz = sizeof(struct scc_stat);
   unsigned struct_serial_multiport_struct_sz
       = sizeof(struct serial_multiport_struct);
   unsigned struct_serial_struct_sz = sizeof(struct serial_struct);