Revert "[clangd] Reapply b60896fad926 Fall back to selecting token-before-cursor if token-after-cursor fails."

This reverts commit a0ff8cd631add513423fc2d8afa49e9650d01fe3.
Buildbot failures I can't chase further tonight.
diff --git a/clang-tools-extra/clangd/refactor/Rename.cpp b/clang-tools-extra/clangd/refactor/Rename.cpp
index 8653238..7d97ac8 100644
--- a/clang-tools-extra/clangd/refactor/Rename.cpp
+++ b/clang-tools-extra/clangd/refactor/Rename.cpp
@@ -80,8 +80,7 @@
   unsigned Offset =
       AST.getSourceManager().getDecomposedSpellingLoc(TokenStartLoc).second;
 
-  SelectionTree Selection = SelectionTree::createRight(
-      AST.getASTContext(), AST.getTokens(), Offset, Offset);
+  SelectionTree Selection(AST.getASTContext(), AST.getTokens(), Offset);
   const SelectionTree::Node *SelectedNode = Selection.commonAncestor();
   if (!SelectedNode)
     return {};