Optimizer: Remove the TypeExpansionAnalysis

It was used in the old redundant-load- and redundant-store-elimination passes which were replaced by new implementations.
TypeExpansionAnalysis is not used anymore.

Author: eeckstein

include/swift/SILOptimizer/Analysis/Analysis.def

@@ -43,7 +43,6 @@ SIL_ANALYSIS(PostDominance)
 SIL_ANALYSIS(PostOrder)
 SIL_ANALYSIS(ProtocolConformance)
 SIL_ANALYSIS(RCIdentity)
-SIL_ANALYSIS(TypeExpansion)
 SIL_ANALYSIS(PassManagerVerifier)
 SIL_ANALYSIS(DeadEndBlocks)
 SIL_ANALYSIS(Region)

include/swift/SILOptimizer/Analysis/TypeExpansionAnalysis.h

@@ -25,5 +25,4 @@ target_sources(swiftSILOptimizer PRIVATE
   RegionAnalysis.cpp
   RCIdentityAnalysis.cpp
   SimplifyInstruction.cpp
-  TypeExpansionAnalysis.cpp
   ValueTracking.cpp)