chore: fix lint and remove unused usePopperMarginModifiers (react-bootstrap#5703)

Author: kyletsang

src/Collapse.tsx

@@ -231,17 +231,17 @@ const Collapse = React.forwardRef(
         onExit={handleExit}
         onExiting={handleExiting}
       >
-        {(state, innerProps) => {
-          return React.cloneElement(children as any, {
+        {(state, innerProps) =>
+          React.cloneElement(children as any, {
             ...innerProps,
             className: classNames(
               className,
               (children as any).props.className,
               collapseStyles[state],
               computedDimension === 'width' && 'width',
             ),
-          });
-        }}
+          })
+        }
       </Transition>
     );
   },

src/Form.tsx

@@ -49,15 +49,13 @@ const Form: BsPrefixRefForwardingComponent<
       ...props
     },
     ref,
-  ) => {
-    return (
-      <Component
-        {...props}
-        ref={ref}
-        className={classNames(className, validated && 'was-validated')}
-      />
-    );
-  },
+  ) => (
+    <Component
+      {...props}
+      ref={ref}
+      className={classNames(className, validated && 'was-validated')}
+    />
+  ),
 );
 
 Form.displayName = 'Form';