remove: remove uncapitalizeKeys from namespace

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

BREAKING CHANGE: remove `uncapitalizeKeys`

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

Ref: #8755

Author: Neerajpathak07

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

@@ -209,7 +209,6 @@ import trythen = require( '@stdlib/utils/try-then' );
 import typemax = require( '@stdlib/utils/type-max' );
 import typemin = require( '@stdlib/utils/type-min' );
 import typeOf = require( '@stdlib/utils/type-of' );
-import uncapitalizeKeys = require( '@stdlib/utils/uncapitalize-keys' );
 import uncurry = require( '@stdlib/utils/uncurry' );
 import uncurryRight = require( '@stdlib/utils/uncurry-right' );
 import unshift = require( '@stdlib/utils/unshift' );
@@ -5602,28 +5601,6 @@ interface Namespace {
 	*/
 	typeOf: typeof typeOf;
 
-	/**
-	* Converts the first letter of each object key to lowercase.
-	*
-	* ## 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.uncapitalizeKeys( obj1 );
-	* // returns { 'aA': 1, 'bB': 2 }
-	*/
-	uncapitalizeKeys: typeof uncapitalizeKeys;
-
 	/**
 	* Transforms a curried function into a function invoked with multiple arguments.
 	*

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

@@ -1741,15 +1741,6 @@ setReadOnly( utils, 'typemin', require( '@stdlib/utils/type-min' ) );
 */
 setReadOnly( utils, 'typeOf', require( '@stdlib/utils/type-of' ) );
 
-/**
-* @name uncapitalizeKeys
-* @memberof utils
-* @readonly
-* @type {Function}
-* @see {@link module:@stdlib/utils/uncapitalize-keys}
-*/
-setReadOnly( utils, 'uncapitalizeKeys', require( '@stdlib/utils/uncapitalize-keys' ) );
-
 /**
 * @name uncurry
 * @memberof utils