Index: include/llvm/MC/MCSectionCOFF.h
===================================================================
--- include/llvm/MC/MCSectionCOFF.h
+++ include/llvm/MC/MCSectionCOFF.h
@@ -62,8 +62,6 @@
   }
 
 public:
-  ~MCSectionCOFF();
-
   /// Decides whether a '.section' directive should be printed before the
   /// section name
   bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
Index: include/llvm/MC/MCSectionELF.h
===================================================================
--- include/llvm/MC/MCSectionELF.h
+++ include/llvm/MC/MCSectionELF.h
@@ -63,8 +63,6 @@
   void setSectionName(StringRef Name) { SectionName = Name; }
 
 public:
-  ~MCSectionELF();
-
   /// Decides whether a '.section' directive should be printed before the
   /// section name
   bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
Index: include/llvm/MC/MCSectionWasm.h
===================================================================
--- include/llvm/MC/MCSectionWasm.h
+++ include/llvm/MC/MCSectionWasm.h
@@ -48,11 +48,7 @@
       : MCSection(SV_Wasm, K, Begin), SectionName(Section), UniqueID(UniqueID),
         Group(group) {}
 
-  void setSectionName(StringRef Name) { SectionName = Name; }
-
 public:
-  ~MCSectionWasm();
-
   /// Decides whether a '.section' directive should be printed before the
   /// section name
   bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
Index: lib/MC/MCSectionCOFF.cpp
===================================================================
--- lib/MC/MCSectionCOFF.cpp
+++ 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,
Index: lib/MC/MCSectionELF.cpp
===================================================================
--- lib/MC/MCSectionELF.cpp
+++ 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,
Index: lib/MC/MCSectionWasm.cpp
===================================================================
--- lib/MC/MCSectionWasm.cpp
+++ lib/MC/MCSectionWasm.cpp
@@ -14,8 +14,6 @@
 
 using namespace llvm;
 
-MCSectionWasm::~MCSectionWasm() {} // anchor.
-
 // Decides whether a '.section' directive
 // should be printed before the section name.
 bool MCSectionWasm::ShouldOmitSectionDirective(StringRef Name,