remove WSL functions

Author: scivision

+stdlib/has_wsl.m

@@ -0,0 +1,25 @@
+%% IS_WSL detect if running under WSL
+% Detects if Matlab or GNU Octave is installed and running from within
+% Windows Subsystem for Linux
+
+function w = is_wsl()
+
+persistent wsl;
+
+if isempty(wsl)
+  wsl = false;
+  if isunix && ~ismac
+    fid = fopen('/proc/version');
+    if fid >= 1
+      v = fscanf(fid,'%s');
+      fclose(fid);
+      wsl = ~isempty(strfind(v, 'microsoft-standard')); %#ok<*STREMP>
+    end
+  end
+end
+
+w = wsl; % has to be a separate line/variable for matlab
+
+end
+
+%!assert(islogical(is_wsl()))

+stdlib/is_wsl.m

@@ -15,8 +15,7 @@ function test_platform(tc)
 tc.verifyThat(stdlib.iscygwin, IsOfClass('logical'))
 tc.verifyThat(stdlib.isoctave, IsOfClass('logical'))
 
-tc.verifyThat(stdlib.iswsl, IsOfClass('logical'))
-tc.verifyThat(stdlib.has_wsl, IsOfClass('logical'))
+tc.verifyThat(stdlib.is_wsl, IsOfClass('logical'))
 
 tc.verifyThat(stdlib.is_rosetta, IsOfClass('logical'))