diff --git a/lib/utils/array.ts b/lib/utils/array.ts
deleted file mode 100644
index b9475300..00000000
--- a/lib/utils/array.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export default function last<T>(arr: T[]): T {
-  return arr[arr.length - 1];
-}
diff --git a/lib/utils/selection.js b/lib/utils/selection.js
deleted file mode 100644
index 13c001e2..00000000
--- a/lib/utils/selection.js
+++ /dev/null
@@ -1,53 +0,0 @@
-//  Clear selection range of current selected term view
-//  Fix event when terminal text is selected and keyboard action is invoked
-export const clear = terminal => {
-  terminal.document_.getSelection().removeAllRanges();
-};
-
-// Use selection extend upon dblclick
-export const extend = terminal => {
-  const sel = terminal.document_.getSelection();
-
-  // Test if focusNode exist and nodeName is #text
-  if (sel.focusNode && sel.focusNode.nodeName === '#text') {
-    terminal.screen_.expandSelection(sel);
-    if (terminal.copyOnSelect) {
-      terminal.copyStringToClipboard(sel);
-    }
-  }
-};
-
-// Fix a bug in ScrollPort selectAll behavior
-// Select all rows in the viewport
-export const all = terminal => {
-  const scrollPort = terminal.scrollPort_;
-  let firstRow;
-  let lastRow;
-
-  if (scrollPort.topFold_.nextSibling.rowIndex === 0) {
-    firstRow = scrollPort.topFold_.nextSibling;
-  } else {
-    while (scrollPort.topFold_.previousSibling) {
-      scrollPort.rowNodes_.removeChild(scrollPort.topFold_.previousSibling);
-    }
-
-    firstRow = scrollPort.fetchRowNode_(0);
-    scrollPort.rowNodes_.insertBefore(firstRow, scrollPort.topFold_);
-    scrollPort.syncRowNodesDimensions_();
-  }
-
-  const lastRowIndex = scrollPort.rowProvider_.getRowCount() - 1;
-
-  if (scrollPort.bottomFold_.previousSibling.rowIndex === lastRowIndex) {
-    lastRow = scrollPort.bottomFold_.previousSibling.rowIndex;
-  } else {
-    while (scrollPort.bottomFold_.nextSibling) {
-      scrollPort.rowNodes_.removeChild(scrollPort.bottomFold_.nextSibling);
-    }
-
-    lastRow = scrollPort.fetchRowNode_(lastRowIndex);
-    scrollPort.rowNodes_.appendChild(lastRow);
-  }
-
-  scrollPort.selection.sync();
-};