don't init run tab if file changed

src/app/tabs/runTab/contractDropdown.js

@@ -76,7 +76,6 @@ class ContractDropdownUI {
     if (!document.querySelector(`.${css.contractNames}`)) return
     document.querySelector(`.${css.contractNames}`).classList.remove(css.contractNamesError)
     var contractNames = document.querySelector(`.${css.contractNames.classNames[0]}`)
-    contractNames.innerHTML = ''
     if (/.(.abi)$/.exec(currentFile)) {
       this.createPanel.style.display = 'none'
       this.orLabel.style.display = 'none'