Remove deprecated SimpleQueryStringBuilder parameters (#57200)

The `lowercase_expand_terms`, `locale` and `all_fields` parameters for
`simple_query_string` have been deprecated and a no-op for at least until 6.0
so we can remove them in 8.0

docs/reference/query-dsl/simple-query-string-query.asciidoc

@@ -75,10 +75,6 @@ For example, a query string of `capital of Hungary` is interpreted as `capital
 AND of AND Hungary`.
 --
 
-`all_fields`::
-deprecated:[6.0.0, set `fields` to `*` instead](Optional, boolean) If `true`,
-search all searchable fields in the index's field mapping.
-
 `analyze_wildcard`::
 (Optional, boolean) If `true`, the query attempts to analyze wildcard terms in
 the query string. Defaults to `false`.

server/src/main/java/org/elasticsearch/index/query/SimpleQueryStringBuilder.java

@@ -101,18 +101,12 @@ public class SimpleQueryStringBuilder extends AbstractQueryBuilder<SimpleQuerySt
     private static final ParseField MINIMUM_SHOULD_MATCH_FIELD = new ParseField("minimum_should_match");
     private static final ParseField ANALYZE_WILDCARD_FIELD = new ParseField("analyze_wildcard");
     private static final ParseField LENIENT_FIELD = new ParseField("lenient");
-    private static final ParseField LOWERCASE_EXPANDED_TERMS_FIELD = new ParseField("lowercase_expanded_terms")
-            .withAllDeprecated("Decision is now made by the analyzer");
-    private static final ParseField LOCALE_FIELD = new ParseField("locale")
-            .withAllDeprecated("Decision is now made by the analyzer");
     private static final ParseField FLAGS_FIELD = new ParseField("flags");
     private static final ParseField DEFAULT_OPERATOR_FIELD = new ParseField("default_operator");
     private static final ParseField ANALYZER_FIELD = new ParseField("analyzer");
     private static final ParseField QUERY_FIELD = new ParseField("query");
     private static final ParseField FIELDS_FIELD = new ParseField("fields");
     private static final ParseField QUOTE_FIELD_SUFFIX_FIELD = new ParseField("quote_field_suffix");
-    private static final ParseField ALL_FIELDS_FIELD = new ParseField("all_fields")
-            .withAllDeprecated("Set [fields] to `*` instead");
     private static final ParseField GENERATE_SYNONYMS_PHRASE_QUERY = new ParseField("auto_generate_synonyms_phrase_query");
     private static final ParseField FUZZY_PREFIX_LENGTH_FIELD = new ParseField("fuzzy_prefix_length");
     private static final ParseField FUZZY_MAX_EXPANSIONS_FIELD = new ParseField("fuzzy_max_expansions");
@@ -522,10 +516,6 @@ public class SimpleQueryStringBuilder extends AbstractQueryBuilder<SimpleQuerySt
                             flags = SimpleQueryStringFlag.ALL.value();
                         }
                     }
-                } else if (LOCALE_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
-                    // ignore, deprecated setting
-                } else if (LOWERCASE_EXPANDED_TERMS_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
-                    // ignore, deprecated setting
                 } else if (LENIENT_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
                     lenient = parser.booleanValue();
                 } else if (ANALYZE_WILDCARD_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
@@ -536,8 +526,6 @@ public class SimpleQueryStringBuilder extends AbstractQueryBuilder<SimpleQuerySt
                     minimumShouldMatch = parser.textOrNull();
                 } else if (QUOTE_FIELD_SUFFIX_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
                     quoteFieldSuffix = parser.textOrNull();
-                } else if (ALL_FIELDS_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
-                    // Ignore deprecated option
                 } else if (GENERATE_SYNONYMS_PHRASE_QUERY.match(currentFieldName, parser.getDeprecationHandler())) {
                     autoGenerateSynonymsPhraseQuery = parser.booleanValue();
                 } else if (FUZZY_PREFIX_LENGTH_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {