fix(example): [ws][math] clean latex methods replace simplified

MSIS-2622

Author: steven.roulleau

examples/v4/websocket_math_iink.html

@@ -59,19 +59,11 @@
       function cleanLatex(latexExport) {
         if (latexExport.includes('\\\\')) {
           const steps = '\\begin{align*}' + latexExport + '\\end{align*}';
-          return steps.replace("\\overrightarrow", "\\vec")
-            .replace("\\begin{aligned}", "")
+          return steps.replace("\\begin{aligned}", "")
             .replace("\\end{aligned}", "")
-            .replace("\\llbracket", "\\lbracket")
-            .replace("\\rrbracket", "\\rbracket")
-            .replace("\\widehat", "\\hat")
             .replace(new RegExp("(align.{1})", "g"), "aligned");
         }
         return latexExport
-          .replace("\\overrightarrow", "\\vec")
-          .replace("\\llbracket", "\\lbracket")
-          .replace("\\rrbracket", "\\rbracket")
-          .replace("\\widehat", "\\hat")
           .replace(new RegExp("(align.{1})", "g"), "aligned");
       }