Remove an incorrect comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52660 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/LiveIntervalAnalysis.h

@@ -173,8 +173,6 @@ namespace llvm {
     /// where every function is composed of one thousand units.  This
     /// measure scales properly with empty index slots in the function.
     unsigned getScaledIntervalSize(LiveInterval& I) const {
-      // Factor of 250 comes from 1000 units per function divided
-      // by four slots per instruction.
       return (1000 / InstrSlots::NUM * I.getSize()) / i2miMap_.size();
     }