[core] Remove redundant overrides resolver (#45970)

Author: romgrk

docs/pages/material-ui/api/dialog.json

@@ -12,7 +12,7 @@
     },
     "BackdropComponent": {
       "type": { "name": "elementType" },
-      "default": "styled(Backdrop, {\n  name: 'MuiModal',\n  slot: 'Backdrop',\n  overridesResolver: (props, styles) => {\n    return styles.backdrop;\n  },\n})({\n  zIndex: -1,\n})",
+      "default": "styled(Backdrop, {\n  name: 'MuiModal',\n  slot: 'Backdrop',\n})({\n  zIndex: -1,\n})",
       "deprecated": true,
       "deprecationInfo": "Use <code>slots.backdrop</code> instead. While this prop currently works, it will be removed in the next major version."
     },

docs/pages/material-ui/api/modal.json

@@ -4,7 +4,7 @@
     "open": { "type": { "name": "bool" }, "required": true },
     "BackdropComponent": {
       "type": { "name": "elementType" },
-      "default": "styled(Backdrop, {\n  name: 'MuiModal',\n  slot: 'Backdrop',\n  overridesResolver: (props, styles) => {\n    return styles.backdrop;\n  },\n})({\n  zIndex: -1,\n})",
+      "default": "styled(Backdrop, {\n  name: 'MuiModal',\n  slot: 'Backdrop',\n})({\n  zIndex: -1,\n})",
       "deprecated": true,
       "deprecationInfo": "Use <code>slots.backdrop</code> instead. While this prop currently works, it will be removed in the next major version."
     },

packages/mui-lab/src/Masonry/Masonry.js

@@ -163,9 +163,6 @@ export const getStyle = ({ ownerState, theme }) => {
 const MasonryRoot = styled('div', {
   name: 'MuiMasonry',
   slot: 'Root',
-  overridesResolver: (props, styles) => {
-    return [styles.root];
-  },
 })(getStyle);
 
 const Masonry = React.forwardRef(function Masonry(inProps, ref) {

packages/mui-lab/src/TabPanel/TabPanel.js

@@ -20,7 +20,6 @@ const useUtilityClasses = (ownerState) => {
 const TabPanelRoot = styled('div', {
   name: 'MuiTabPanel',
   slot: 'Root',
-  overridesResolver: (props, styles) => styles.root,
 })(({ theme }) => ({
   padding: theme.spacing(3),
 }));

packages/mui-lab/src/TimelineConnector/TimelineConnector.js

@@ -19,7 +19,6 @@ const useUtilityClasses = (ownerState) => {
 const TimelineConnectorRoot = styled('span', {
   name: 'MuiTimelineConnector',
   slot: 'Root',
-  overridesResolver: (props, styles) => styles.root,
 })(({ theme }) => {
   return {
     width: 2,

packages/mui-lab/src/TimelineSeparator/TimelineSeparator.js

@@ -19,7 +19,6 @@ const useUtilityClasses = (ownerState) => {
 const TimelineSeparatorRoot = styled('div', {
   name: 'MuiTimelineSeparator',
   slot: 'Root',
-  overridesResolver: (props, styles) => styles.root,
 })({
   display: 'flex',
   flexDirection: 'column',

packages/mui-material/src/Accordion/Accordion.js

@@ -129,7 +129,6 @@ const AccordionRoot = styled(Paper, {
 const AccordionHeading = styled('h3', {
   name: 'MuiAccordion',
   slot: 'Heading',
-  overridesResolver: (props, styles) => styles.heading,
 })({
   all: 'unset',
 });

packages/mui-material/src/AccordionDetails/AccordionDetails.js

@@ -21,7 +21,6 @@ const useUtilityClasses = (ownerState) => {
 const AccordionDetailsRoot = styled('div', {
   name: 'MuiAccordionDetails',
   slot: 'Root',
-  overridesResolver: (props, styles) => styles.root,
 })(
   memoTheme(({ theme }) => ({
     padding: theme.spacing(1, 2, 2),

packages/mui-material/src/AccordionSummary/AccordionSummary.js

@@ -29,7 +29,6 @@ const useUtilityClasses = (ownerState) => {
 const AccordionSummaryRoot = styled(ButtonBase, {
   name: 'MuiAccordionSummary',
   slot: 'Root',
-  overridesResolver: (props, styles) => styles.root,
 })(
   memoTheme(({ theme }) => {
     const transition = {
@@ -68,7 +67,6 @@ const AccordionSummaryRoot = styled(ButtonBase, {
 const AccordionSummaryContent = styled('span', {
   name: 'MuiAccordionSummary',
   slot: 'Content',
-  overridesResolver: (props, styles) => styles.content,
 })(
   memoTheme(({ theme }) => ({
     display: 'flex',
@@ -94,7 +92,6 @@ const AccordionSummaryContent = styled('span', {
 const AccordionSummaryExpandIconWrapper = styled('span', {
   name: 'MuiAccordionSummary',
   slot: 'ExpandIconWrapper',
-  overridesResolver: (props, styles) => styles.expandIconWrapper,
 })(
   memoTheme(({ theme }) => ({
     display: 'flex',

packages/mui-material/src/Alert/Alert.js

@@ -121,7 +121,6 @@ const AlertRoot = styled(Paper, {
 const AlertIcon = styled('div', {
   name: 'MuiAlert',
   slot: 'Icon',
-  overridesResolver: (props, styles) => styles.icon,
 })({
   marginRight: 12,
   padding: '7px 0',
@@ -133,7 +132,6 @@ const AlertIcon = styled('div', {
 const AlertMessage = styled('div', {
   name: 'MuiAlert',
   slot: 'Message',
-  overridesResolver: (props, styles) => styles.message,
 })({
   padding: '8px 0',
   minWidth: 0,
@@ -143,7 +141,6 @@ const AlertMessage = styled('div', {
 const AlertAction = styled('div', {
   name: 'MuiAlert',
   slot: 'Action',
-  overridesResolver: (props, styles) => styles.action,
 })({
   display: 'flex',
   alignItems: 'flex-start',