Fix 3838 - deprecate datanalyzer (#3839)

Co-authored-by: Horacio Sanson <horacio@allm.inc>

doc/ale-dart.txt

@@ -87,39 +87,6 @@ g:ale_dart_format_options                           *g:ale_dart_format_options*
   This variable can be set to pass additional options to the dart format fixer.
 
 
-
-===============================================================================
-dartanalyzer                                            *ale-dart-dartanalyzer*
-
-Installation
--------------------------------------------------------------------------------
-
-Install Dart via whatever means. `dartanalyzer` will be included in the SDK.
-
-You can add the SDK to `$PATH`, as described here:
-https://www.dartlang.org/tools/sdk
-
-If you have installed Dart on Linux, you can also try the following: >
-  " Set the executable path for dartanalyzer to the absolute path to it.
-  let g:ale_dart_dartanalyzer_executable = '/usr/lib/dart/bin/dartanalyzer'
-<
-... or similarly for wherever your Dart SDK lives. This should work without
-having to modify `$PATH`.
-
-ALE can only check for problems with `dartanalyzer` with the file on disk.
-See |ale-lint-file-linters|
-
-Options
--------------------------------------------------------------------------------
-
-g:ale_dart_dartanalyzer_executable         *g:ale_dart_dartanalyzer_executable*
-                                           *b:ale_dart_dartanalyzer_executable*
-  Type: |String|
-  Default: `'dartanalyzer'`
-
-  This variable can be set to change the path to dartanalyzer.
-
-
 ===============================================================================
 dartfmt                                                      *ale-dart-dartfmt*
 

doc/ale-supported-languages-and-tools.txt

@@ -136,7 +136,6 @@ Notes:
   * `analysis_server`
   * `dart-analyze`!!
   * `dart-format`!!
-  * `dartanalyzer`!!
   * `dartfmt`!!
   * `language_server`
 * desktop

doc/ale.txt

@@ -2785,7 +2785,6 @@ documented in additional help files.
     analysis_server.......................|ale-dart-analysis_server|
     dart-analyze..........................|ale-dart-analyze|
     dart-format...........................|ale-dart-format|
-    dartanalyzer..........................|ale-dart-dartanalyzer|
     dartfmt...............................|ale-dart-dartfmt|
   desktop.................................|ale-desktop-options|
     desktop-file-validate.................|ale-desktop-desktop-file-validate|