[MCA] [NFC] Remove unused Index formal from ResourceManager::issueInstruction

Summary: The instruction index was never referenced in the body.  Just a minor cleanup.

Reviewers: andreadb

Reviewed By: andreadb

Subscribers: javed.absar, gbedwell, llvm-commits

Differential Revision: https://reviews.llvm.org/D46142

llvm-svn: 331001
diff --git a/llvm/tools/llvm-mca/Scheduler.cpp b/llvm/tools/llvm-mca/Scheduler.cpp
index 77c67456..ead3226 100644
--- a/llvm/tools/llvm-mca/Scheduler.cpp
+++ b/llvm/tools/llvm-mca/Scheduler.cpp
@@ -179,7 +179,7 @@
 }
 
 void ResourceManager::issueInstruction(
-    unsigned Index, const InstrDesc &Desc,
+    const InstrDesc &Desc,
     SmallVectorImpl<std::pair<ResourceRef, double>> &Pipes) {
   for (const std::pair<uint64_t, ResourceUsage> &R : Desc.Resources) {
     const CycleSegment &CS = R.second.CS;
@@ -350,7 +350,7 @@
 
   // Issue the instruction and collect all the consumed resources
   // into a vector. That vector is then used to notify the listener.
-  Resources->issueInstruction(InstrIndex, D, UsedResources);
+  Resources->issueInstruction(D, UsedResources);
 
   // Notify the instruction that it started executing.
   // This updates the internal state of each write.