[GlobalISel] Drop workaround for Legalizer member/class sharing a name. NFC.

MachineLegalizer used to be the name of both the class and the member,
causing GCC errors. r276522 fixed that by renaming the member to just
'Legalizer'.  The 'class' workaround isn't necessary anymore; drop it.

llvm-svn: 289848
diff --git a/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp b/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp
index b84abc7..e4ef0d4 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetMachine.cpp
@@ -217,7 +217,7 @@
   const InstructionSelector *getInstructionSelector() const override {
     return InstSelector.get();
   }
-  const class LegalizerInfo *getLegalizerInfo() const override {
+  const LegalizerInfo *getLegalizerInfo() const override {
     return Legalizer.get();
   }
   const RegisterBankInfo *getRegBankInfo() const override {
diff --git a/llvm/lib/Target/ARM/ARMTargetMachine.cpp b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
index 7c24c2a..70c9567 100644
--- a/llvm/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
@@ -253,7 +253,7 @@
   const InstructionSelector *getInstructionSelector() const override {
     return InstSelector.get();
   }
-  const class LegalizerInfo *getLegalizerInfo() const override {
+  const LegalizerInfo *getLegalizerInfo() const override {
     return Legalizer.get();
   }
   const RegisterBankInfo *getRegBankInfo() const override {
diff --git a/llvm/lib/Target/X86/X86TargetMachine.cpp b/llvm/lib/Target/X86/X86TargetMachine.cpp
index 6eb96a5..50b7eca 100644
--- a/llvm/lib/Target/X86/X86TargetMachine.cpp
+++ b/llvm/lib/Target/X86/X86TargetMachine.cpp
@@ -190,7 +190,7 @@
     //TODO: Implement
     return nullptr;
   }
-  const class LegalizerInfo *getLegalizerInfo() const override {
+  const LegalizerInfo *getLegalizerInfo() const override {
     //TODO: Implement
     return nullptr;
   }