Revert "[lldb] Display autosuggestion part in gray if there is one possible suggestion"

This reverts commit 246afe0cd17fce935a01171f3cca548e02523e5c. This broke
the following tests on Linux it seems:
  lldb-api :: commands/expression/multiline-completion/TestMultilineCompletion.py
  lldb-api :: iohandler/completion/TestIOHandlerCompletion.py

1 files changed, 0 insertions, 13 deletions

diff --git a/lldb/source/Interpreter/CommandInterpreter.cpp b/lldb/source/Interpreter/CommandInterpreter.cpp
index ec82efb..4786e46 100644
--- a/lldb/source/Interpreter/CommandInterpreter.cpp
+++ b/lldb/source/Interpreter/CommandInterpreter.cpp
@@ -1878,19 +1878,6 @@ void CommandInterpreter::HandleCompletion(CompletionRequest &request) {
   HandleCompletionMatches(request);
 }
 
-llvm::Optional<std::string>
-CommandInterpreter::GetAutoSuggestionForCommand(llvm::StringRef line) {
-  if (line.empty())
-    return llvm::None;
-  const size_t s = m_command_history.GetSize();
-  for (int i = s - 1; i >= 0; --i) {
-    llvm::StringRef entry = m_command_history.GetStringAtIndex(i);
-    if (entry.consume_front(line))
-      return entry.str();
-  }
-  return llvm::None;
-}
-
 CommandInterpreter::~CommandInterpreter() {}
 
 void CommandInterpreter::UpdatePrompt(llvm::StringRef new_prompt) {