chore: reinstate IBM Z pictogram (#1410)

Author: leonardo-costa-IBM

gatsby-node.js

@@ -24,7 +24,6 @@ exports.onPreBootstrap = async ({ reporter }) => {
     .map(removeUnusedData)
     .filter((pictogram) => {
       if (
-        pictogram.name === 'ibm--z' ||
         pictogram.name === 'ibm--z--partition' ||
         pictogram.name === 'tokyo--volcano'
       ) {

src/components/SVGLibraries/PictogramLibrary/PictogramCategory.js

@@ -23,7 +23,6 @@ const IconCategory = ({ category, pictograms, columnCount }) => {
         {pictograms
           .filter((pictogram) => {
             if (
-              pictogram.name === 'ibm--z' ||
               pictogram.name === 'ibm--z--partition' ||
               pictogram.name === 'ibm--z-and-linuxone-multi-frame' ||
               pictogram.name === 'ibm--z-and-linuxone-single-frame' ||