Revert "wrap button in span with tabIndex, in order not to lose focus in safari"

This reverts commit a857ec5.

Author: stomita

src/scripts/DateInput.tsx

@@ -312,17 +312,15 @@ class DateInputInner extends Component<
           onChange={this.onInputChange}
           onBlur={this.onInputBlur}
         />
-        <span style={{ outline: 0 }} tabIndex={-1} onBlur={this.onInputBlur}>
-          <Button
-            type='icon'
-            icon='event'
-            disabled={props.disabled}
-            className='slds-input__icon slds-input__icon_right'
-            tabIndex={-1}
-            onClick={props.disabled ? undefined : this.onDateIconClick}
-            onBlur={this.onInputBlur}
-          />
-        </span>
+        <Button
+          type='icon'
+          icon='event'
+          disabled={props.disabled}
+          className='slds-input__icon slds-input__icon_right'
+          tabIndex={-1}
+          onClick={props.disabled ? undefined : this.onDateIconClick}
+          onBlur={this.onInputBlur}
+        />
       </div>
     );
   }

src/scripts/Lookup.tsx

@@ -280,17 +280,15 @@ export class LookupSearch extends Component<LookupSearchProps> {
           onChange={this.onInputChange}
           onBlur={this.onInputBlur}
         />
-        <span style={{ outline: 0 }} tabIndex={-1} onBlur={this.onInputBlur}>
-          <Button
-            type='icon'
-            icon='search'
-            disabled={props.disabled}
-            className='slds-input__icon slds-input__icon_right'
-            tabIndex={-1}
-            onClick={props.disabled ? undefined : this.onLookupIconClick}
-            onBlur={this.onInputBlur}
-          />
-        </span>
+        <Button
+          type='icon'
+          icon='search'
+          disabled={props.disabled}
+          className='slds-input__icon slds-input__icon_right'
+          tabIndex={-1}
+          onClick={props.disabled ? undefined : this.onLookupIconClick}
+          onBlur={this.onInputBlur}
+        />
       </div>
     );
   }