Remove OutputSection::updateAlignment.

I feel it is easier to understand without this function.

llvm-svn: 315140
diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index 5c2acc4..e9b27a1 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -265,7 +265,7 @@
   Out::ElfHeader = make<OutputSection>("", 0, SHF_ALLOC);
   Out::ElfHeader->Size = sizeof(Elf_Ehdr);
   Out::ProgramHeaders = make<OutputSection>("", 0, SHF_ALLOC);
-  Out::ProgramHeaders->updateAlignment(Config->Wordsize);
+  Out::ProgramHeaders->Alignment = Config->Wordsize;
 
   if (needsInterpSection()) {
     InX::Interp = createInterpSection();