refactor: filter Tether/USDT from install candidates

lib/blockchain/install.js

@@ -113,15 +113,18 @@ function plugin (crypto) {
 }
 
 function run () {  
-  const choices = _.map(c => {
+  const choices = _.flow([
-    const checked = isInstalledSoftware(c) && isInstalledVolume(c)
+    _.filter(c => c.type !== 'erc-20'),
-    return {
+    _.map(c => {
-      name: c.display,
+      const checked = isInstalledSoftware(c) && isInstalledVolume(c)
-      value: c.code,
+      return {
-      checked,
+        name: c.display,
-      disabled: checked && 'Installed'
+        value: c.code,
-    }
+        checked,
-  }, cryptos)
+        disabled: checked && 'Installed'
+      }
+    }),
+  ])(cryptos)
 
   const questions = []