[PM] Remove is_analysis label for LoopSimplify (#121433)

This reverts part of the changes in #118779

Author: optimisan

llvm/lib/Transforms/Utils/LoopSimplify.cpp

@@ -778,7 +778,7 @@ INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_END(LoopSimplify, "loop-simplify", "Canonicalize natural loops",
-                    false, true)
+                    false, false)
 
 // Publicly exposed interface to pass...
 char &llvm::LoopSimplifyID = LoopSimplify::ID;