remove: remove capitalizeKeys from namespace

This commit removes the `capitalizeKeys` symbol from the `@stdlib/utils`
namespace due to a package migration.

BREAKING CHANGE: remove `capitalizeKeys`

To migrate, users should access the same symbol via the
`@stdlib/object` namespace.

Ref: stdlib-js#8755

Author: Neerajpathak07

lib/node_modules/@stdlib/utils/docs/types/index.d.ts

@@ -30,7 +30,6 @@ import bifurcate = require( '@stdlib/utils/bifurcate' );
 import bifurcateBy = require( '@stdlib/utils/bifurcate-by' );
 import bifurcateIn = require( '@stdlib/utils/bifurcate-in' );
 import bifurcateOwn = require( '@stdlib/utils/bifurcate-own' );
-import capitalizeKeys = require( '@stdlib/utils/capitalize-keys' );
 import commonKeys = require( '@stdlib/utils/common-keys' );
 import commonKeysIn = require( '@stdlib/utils/common-keys-in' );
 import compose = require( '@stdlib/utils/compose' );
@@ -577,28 +576,6 @@ interface Namespace {
 	*/
 	bifurcateOwn: typeof bifurcateOwn;
 
-	/**
-	* Converts the first letter of each object key to uppercase.
-	*
-	* ## Notes
-	*
-	* -   The function only transforms own properties. Hence, the function does not transform inherited properties.
-	* -   The function shallow copies key values.
-	*
-	* @param obj - source object
-	* @returns new object
-	*
-	* @example
-	* var obj1 = {
-	*     'aa': 1,
-	*     'bb': 2
-	* };
-	*
-	* var obj2 = ns.capitalizeKeys( obj1 );
-	* // returns { 'Aa': 1, 'Bb': 2 }
-	*/
-	capitalizeKeys: typeof capitalizeKeys;
-
 	/**
 	* Returns the common own property names of two or more objects.
 	*

lib/node_modules/@stdlib/utils/lib/index.js

@@ -130,15 +130,6 @@ setReadOnly( utils, 'bifurcateIn', require( '@stdlib/utils/bifurcate-in' ) );
 */
 setReadOnly( utils, 'bifurcateOwn', require( '@stdlib/utils/bifurcate-own' ) );
 
-/**
-* @name capitalizeKeys
-* @memberof utils
-* @readonly
-* @type {Function}
-* @see {@link module:@stdlib/utils/capitalize-keys}
-*/
-setReadOnly( utils, 'capitalizeKeys', require( '@stdlib/utils/capitalize-keys' ) );
-
 /**
 * @name commonKeys
 * @memberof utils