[test] Remove duplicate test case

This is essentially the same as `8668a3eb11f2baf.swift`.

Author: hamishknight

validation-test/IDE/crashers/8659dc98be5856f6.swift

@@ -1,4 +1,4 @@
-// {"kind":"complete","signature":"swift::ASTVisitor<(anonymous namespace)::StmtChecker, void, swift::Stmt*, void, void, void, void>::visit(swift::Stmt*)"}
-// RUN: not --crash %target-swift-ide-test -code-completion --code-completion-token=COMPLETE -code-completion-diagnostics -source-filename %s
+// {"kind":"complete","signature":"bool (anonymous namespace)::StmtChecker::typeCheckStmt<swift::Stmt>(swift::Stmt*&)"}
+// RUN: not --crash %target-swift-ide-test -code-completion -batch-code-completion -skip-filecheck -code-completion-diagnostics -source-filename %s
 extension {
 a { discard b#^COMPLETE^#

validation-test/IDE/crashers/9b90cd875bff6ab4.swift

@@ -1,4 +1,4 @@
-// {"signature":"(anonymous namespace)::SyntacticElementSolutionApplication::visitReturnStmt(swift::ReturnStmt*)"}
+// {"kind":"typecheck","signature":"(anonymous namespace)::SyntacticElementSolutionApplication::visitReturnStmt(swift::ReturnStmt*)"}
 // RUN: not --crash %target-swift-frontend -typecheck %s
 enum a func b(c : a) {
 let: