[clang] [clang-tools-extra] [analyzer] Remove alpha.core.IdenticalExpr Checker (PR #114715)

[Congcong Cai via cfe-commits]

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@@ -102,6 +102,210 @@ void BranchCloneCheck::registerMatchers(MatchFinder *Finder) {
       this);
   Finder->addMatcher(switchStmt().bind("switch"), this);
   Finder->addMatcher(conditionalOperator().bind("condOp"), this);
+  Finder->addMatcher(ifStmt(hasDescendant(ifStmt())).bind("ifWithDescendantIf"),
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HerrCai0907 wrote:

`hasDescendant` will match lots of unrelated cases which will slow the speed. move the later check to here

https://github.com/llvm/llvm-project/pull/114715