Don't add pipe method to TextContentWriter

I'm not sure how generally useful it would be.

Author: robinst

commonmark-ext-gfm-tables/src/main/java/org/commonmark/ext/gfm/tables/internal/TableTextContentNodeRenderer.java

@@ -45,7 +45,7 @@ protected void renderRow(TableRow tableRow) {
 
     protected void renderCell(TableCell tableCell) {
         renderChildren(tableCell);
-        textContentWriter.pipe();
+        textContentWriter.write('|');
         textContentWriter.whitespace();
     }
 

commonmark/src/main/java/org/commonmark/renderer/text/TextContentWriter.java

@@ -24,12 +24,6 @@ public void colon() {
         }
     }
 
-    public void pipe() {
-        if (lastChar != 0 && lastChar != '|') {
-            append('|');
-        }
-    }
-
     public void line() {
         if (lastChar != 0 && lastChar != '\n') {
             append('\n');