Remove FlowFixMe's from TypeScript

Summary: This diff was a joy to draft.

Reviewed By: jknoxville

Differential Revision: D17344676

fbshipit-source-id: 0694d0393fa243edef61408ecfee92912fbbfa32

src/ui/components/Orderable.tsx

@@ -202,13 +202,11 @@ export default class Orderable extends React.Component<
       {passive: true},
     );
 
-    // $FlowFixMe
     const screenClickPos = event.nativeEvent[this.screenKey];
 
     document.addEventListener(
       'mousemove',
       (this._mousemove = (event: MouseEvent) => {
-        // $FlowFixMe
         const goingOpposite = event[this.screenKey] < screenClickPos;
         this.possibleMove(activeKey, goingOpposite, event, clickOffset, sizes);
       }),
@@ -230,7 +228,7 @@ export default class Orderable extends React.Component<
     if (containerRef) {
       const containerRect: Rect = containerRef.getBoundingClientRect();
 
-      let newActivePos = // $FlowFixMe
+      let newActivePos =
         event[this.screenKey] - containerRect[this.offsetKey] - cursorOffset;
       newActivePos = Math.max(-1, newActivePos);
       newActivePos = Math.min(

src/ui/components/table/ManagedTable_immutable.tsx

@@ -322,7 +322,6 @@ class ManagedTable extends React.Component<
       if (!e.shiftKey) {
         highlightedRows.clear();
       }
-      // $FlowFixMe 0 <= newIndex <= rows.size - 1
       highlightedRows.add(rows.get(newIndex)!.key);
       this.onRowHighlighted(highlightedRows, () => {
         const {current} = this.tableRef;
@@ -437,11 +436,9 @@ class ManagedTable extends React.Component<
     let startIndex = -1;
     let endIndex = -1;
     for (let i = 0; i < this.props.rows.size; i++) {
-      // $FlowFixMe 0 <= newIndex <= rows.size - 1
       if (this.props.rows.get(i)!.key === fromKey) {
         startIndex = i;
       }
-      // $FlowFixMe 0 <= newIndex <= rows.size - 1
       if (this.props.rows.get(i)!.key === toKey) {
         endIndex = i;
       }
@@ -456,7 +453,6 @@ class ManagedTable extends React.Component<
       i++
     ) {
       try {
-        // $FlowFixMe 0 <= newIndex <= rows.size - 1
         selected.push(this.props.rows.get(i)!.key);
       } catch (e) {}
     }
@@ -475,7 +471,6 @@ class ManagedTable extends React.Component<
       !e.shiftKey // When shift key is pressed, it's a range select not a drag select
     ) {
       current.scrollToItem(index + 1);
-      // $FlowFixMe 0 <= newIndex <= rows.size - 1
       const startKey = this.props.rows.get(dragStartIndex)!.key;
       const highlightedRows = new Set(this.selectInRange(startKey, row.key));
       this.onRowHighlighted(highlightedRows);