Remove rests of StandardHtmlStripAnalyzer (#43485)

StandardHtmlStripAnalyzer has been deprecated in 6.x and cannot be used for new
indices from 7.0 on. This change removes it entirely and also removes the from
tests and deprecation logging that has still been around during the 7.x
versions.

Author: Christoph Büscher

modules/analysis-common/src/main/java/org/elasticsearch/analysis/common/CommonAnalysisPlugin.java

@@ -322,9 +322,6 @@ public Map<String, AnalysisProvider<TokenizerFactory>> getTokenizers() {
     @Override
     public List<PreBuiltAnalyzerProviderFactory> getPreBuiltAnalyzerProviderFactories() {
         List<PreBuiltAnalyzerProviderFactory> analyzers = new ArrayList<>();
-        // TODO remove in 8.0
-        analyzers.add(new PreBuiltAnalyzerProviderFactory("standard_html_strip", CachingStrategy.ELASTICSEARCH,
-            () -> new StandardHtmlStripAnalyzer(CharArraySet.EMPTY_SET)));
         analyzers.add(new PreBuiltAnalyzerProviderFactory("pattern", CachingStrategy.ELASTICSEARCH,
             () -> new PatternAnalyzer(Regex.compile("\\W+" /*PatternAnalyzer.NON_WORD_PATTERN*/, null), true,
             CharArraySet.EMPTY_SET)));

modules/analysis-common/src/main/java/org/elasticsearch/analysis/common/StandardHtmlStripAnalyzer.java

@@ -67,15 +67,6 @@
     - length: { tokens: 1 }
     - match:  { tokens.0.token: a1 b2 c3 d4 }
 
----
-"standard_html_strip":
-    - do:
-        catch: /\[standard_html_strip\] analyzer is not supported for new indices, use a custom analyzer using \[standard\] tokenizer and \[html_strip\] char_filter, plus \[lowercase\] filter/
-        indices.analyze:
-          body:
-            text:     <bold/> <italic/>
-            analyzer: standard_html_strip
-
 ---
 "pattern":
     - do:

modules/analysis-common/src/test/resources/rest-api-spec/test/analysis-common/20_analyzers.yml

@@ -185,11 +185,7 @@ public Analyzer getAnalyzer(String analyzer) throws IOException {
                             throw new ElasticsearchException("failed to load analyzer for name " + key, ex);
                         }}
             );
-        } else if ("standard_html_strip".equals(analyzer)) {
-            throw new IllegalArgumentException("[standard_html_strip] analyzer is not supported for new indices, " +
-                "use a custom analyzer using [standard] tokenizer and [html_strip] char_filter, plus [lowercase] filter");
         }
-
         return analyzerProvider.get(environment, analyzer).get();
     }