[llvm-mca] Remove unused/stale forward decl. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@343823 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/llvm-mca/include/InstrBuilder.h b/tools/llvm-mca/include/InstrBuilder.h
index e318092..ff7fb52 100644 (file)
--- a/tools/llvm-mca/include/InstrBuilder.h
+++ b/tools/llvm-mca/include/InstrBuilder.h
@@ -26,8 +26,6 @@
 
 namespace mca {
 
-class DispatchUnit;
-
 /// A builder class that knows how to construct Instruction objects.
 ///
 /// Every llvm-mca Instruction is described by an object of class InstrDesc.