diff --git a/include/llvm/MC/MCSectionCOFF.h b/include/llvm/MC/MCSectionCOFF.h
index 68618f1..8be95e0 100644
--- a/include/llvm/MC/MCSectionCOFF.h
+++ b/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;
diff --git a/include/llvm/MC/MCSectionELF.h b/include/llvm/MC/MCSectionELF.h
index f61cd03..fe6b2d7 100644
--- a/include/llvm/MC/MCSectionELF.h
+++ b/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;
diff --git a/include/llvm/MC/MCSectionWasm.h b/include/llvm/MC/MCSectionWasm.h
index 15f618a..0e576b7 100644
--- a/include/llvm/MC/MCSectionWasm.h
+++ b/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;
diff --git a/lib/MC/MCSectionCOFF.cpp b/lib/MC/MCSectionCOFF.cpp
index 8fd4c64..f0c06f7 100644
--- a/lib/MC/MCSectionCOFF.cpp
+++ b/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/lib/MC/MCSectionELF.cpp b/lib/MC/MCSectionELF.cpp
index dd88366..e3c24ef 100644
--- a/lib/MC/MCSectionELF.cpp
+++ b/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/lib/MC/MCSectionWasm.cpp b/lib/MC/MCSectionWasm.cpp
index a8f5689..164ded9 100644
--- a/lib/MC/MCSectionWasm.cpp
+++ b/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,