Remove deprecated methods in SimpleQueryStringBuilder (#36341)

The `useAllFields`methods have already been deprecated in 6.0 and are save to remove in 7.0.

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

@@ -38,7 +38,6 @@ import org.elasticsearch.index.search.SimpleQueryStringQueryParser.Settings;
 
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
@@ -251,22 +250,6 @@ public class SimpleQueryStringBuilder extends AbstractQueryBuilder<SimpleQuerySt
         return this.analyzer;
     }
 
-    @Deprecated
-    public Boolean useAllFields() {
-        return fieldsAndWeights.size() == 1 && fieldsAndWeights.keySet().stream().anyMatch(Regex::isMatchAllPattern);
-    }
-
-    /**
-     * This setting is deprecated, set {@link #field(String)} to "*" instead.
-     */
-    @Deprecated
-    public SimpleQueryStringBuilder useAllFields(Boolean useAllFields) {
-        if (useAllFields != null && useAllFields) {
-            this.fieldsAndWeights = Collections.singletonMap("*", 1.0f);
-        }
-        return this;
-    }
-
     /**
      * Specify the default operator for the query. Defaults to "OR" if no
      * operator is specified.

server/src/test/java/org/elasticsearch/search/query/SimpleQueryStringIT.java

@@ -594,7 +594,7 @@ public class SimpleQueryStringIT extends ESIntegTestCase {
         Exception e = expectThrows(Exception.class, () -> {
                 SimpleQueryStringBuilder qb = simpleQueryStringQuery("bar");
                 if (randomBoolean()) {
-                    qb.useAllFields(true);
+                    qb.field("*");
                 }
                 client().prepareSearch("toomanyfields").setQuery(qb).get();
                 });