Remove PPL keyword from general placeholder in search bar (#1121)

* remove unused files

Signed-off-by: Eric Wei <menwe@amazon.com>

* missing snapshots

Signed-off-by: Eric Wei <menwe@amazon.com>

* remove language from placeholder

Signed-off-by: Eric <menwe@amazon.com>

---------

Signed-off-by: Eric Wei <menwe@amazon.com>
Signed-off-by: Eric <menwe@amazon.com>
(cherry picked from commit 00363e0)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

public/components/common/search/autocomplete.tsx

@@ -43,7 +43,7 @@ export const Autocomplete = (props: AutocompleteProps) => {
     isDisabled,
     baseQuery,
     tabId = '',
-    placeholder = 'Enter PPL query',
+    placeholder = 'Enter query',
     possibleCommands,
     append,
     isSuggestionDisabled = false,