[MC] Clean up unused inline function and non-anchor defaulted destructors; NFCI

Summary:
Take care of some missing clean-ups that belong with r249548 and some
other copy/paste that had happened. In particular, the destructors are
no longer vtable anchors after r249548; and `setSectionName` in
`MCSectionWasm` is private and unused since r313058 culled its only
caller. The destructors are now implicitly defined, and the unused
function is removed.

Reviewers: nemanjai, jasonliu, grosbach

Reviewed By: nemanjai

Subscribers: sbc100, aheejin, sunfish, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D57182

llvm-svn: 353597

3 files changed, 0 insertions, 6 deletions

diff --git a/llvm/lib/MC/MCSectionCOFF.cpp b/llvm/lib/MC/MCSectionCOFF.cpp
index 8fd4c64d0d9..f0c06f70bd7 100644
--- a/llvm/lib/MC/MCSectionCOFF.cpp
+++ b/llvm/lib/MC/MCSectionCOFF.cpp
@@ -14,8 +14,6 @@
 
 using namespace llvm;
 
-MCSectionCOFF::~MCSectionCOFF() = default; // anchor.
-
 // ShouldOmitSectionDirective - Decides whether a '.section' directive
 // should be printed before the section name
 bool MCSectionCOFF::ShouldOmitSectionDirective(StringRef Name,
diff --git a/llvm/lib/MC/MCSectionELF.cpp b/llvm/lib/MC/MCSectionELF.cpp
index dd883665e0b..e3c24efa93f 100644
--- a/llvm/lib/MC/MCSectionELF.cpp
+++ b/llvm/lib/MC/MCSectionELF.cpp
@@ -17,8 +17,6 @@
 
 using namespace llvm;
 
-MCSectionELF::~MCSectionELF() = default; // anchor.
-
 // Decides whether a '.section' directive
 // should be printed before the section name.
 bool MCSectionELF::ShouldOmitSectionDirective(StringRef Name,
diff --git a/llvm/lib/MC/MCSectionWasm.cpp b/llvm/lib/MC/MCSectionWasm.cpp
index a8f56897ee1..164ded9a1f8 100644
--- a/llvm/lib/MC/MCSectionWasm.cpp
+++ b/llvm/lib/MC/MCSectionWasm.cpp
@@ -14,8 +14,6 @@
 
 using namespace llvm;
 
-MCSectionWasm::~MCSectionWasm() = default; // anchor.
-
 // Decides whether a '.section' directive
 // should be printed before the section name.
 bool MCSectionWasm::shouldOmitSectionDirective(StringRef Name,