Remove todo about merging tests

Author: jdenny-ornl

flang/test/Analysis/AliasAnalysis/ptr-component.fir

@@ -4,8 +4,6 @@
 // MLIR after convert-hlfir-to-fir.  A key difference is that component access
 // is via fir.coordinate_of instead of hlfir.designate.  We would like alias
 // analysis results to be the same in both versions.
-//
-// TODO: What about merging with alias-analysis-3.fir as it has the same focus?
 
 // RUN: fir-opt %s -split-input-file -o /dev/null --mlir-disable-threading  \
 // RUN:   -pass-pipeline='builtin.module(func.func(test-fir-alias-analysis))' \