remove unnecessary private export

Author: siriwatknp

packages/mui-material/src/styles/index.d.ts

@@ -139,4 +139,3 @@ export { default as shouldSkipGeneratingVar } from './shouldSkipGeneratingVar';
 // Private methods for creating parts of the theme
 export { default as private_createTypography } from './createTypography';
 export { default as private_excludeVariablesFromRoot } from './excludeVariablesFromRoot';
-export { default as private_createGetSelector } from './createGetSelector';

packages/mui-material/src/styles/index.js

@@ -53,4 +53,3 @@ export { default as shouldSkipGeneratingVar } from './shouldSkipGeneratingVar';
 export { default as private_createTypography } from './createTypography';
 export { default as private_createMixins } from './createMixins';
 export { default as private_excludeVariablesFromRoot } from './excludeVariablesFromRoot';
-export { default as private_createGetSelector } from './createGetSelector';