remove: remove mean from namespace

This commit removes the `mean` symbol from the `@stdlib/stats/base` namespace due to a package migration.

BREAKING CHANGE: remove `mean`

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

Ref: #4797

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description: Results of running static analysis checks when committing changes.
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Author: gururaj1512

lib/node_modules/@stdlib/stats/base/docs/types/index.d.ts

@@ -31,7 +31,6 @@ import dmeanvar = require( '@stdlib/stats/base/dmeanvar' );
 import dmeanvarpn = require( '@stdlib/stats/base/dmeanvarpn' );
 import dvarm = require( '@stdlib/stats/base/dvarm' );
 import dvarmpn = require( '@stdlib/stats/base/dvarmpn' );
-import mean = require( '@stdlib/stats/base/mean' );
 import meankbn = require( '@stdlib/stats/base/meankbn' );
 import meankbn2 = require( '@stdlib/stats/base/meankbn2' );
 import meanors = require( '@stdlib/stats/base/meanors' );
@@ -411,28 +410,6 @@ interface Namespace {
 	*/
 	dvarmpn: typeof dvarmpn;
 
-	/**
-	* Computes the arithmetic mean of a strided array.
-	*
-	* @param N - number of indexed elements
-	* @param x - input array
-	* @param stride - stride length
-	* @returns arithmetic mean
-	*
-	* @example
-	* var x = [ 1.0, -2.0, 2.0 ];
-	*
-	* var v = ns.mean( x.length, x, 1 );
-	* // returns ~0.3333
-	*
-	* @example
-	* var x = [ 1.0, -2.0, 2.0 ];
-	*
-	* var v = ns.mean.ndarray( x.length, x, 1, 0 );
-	* // returns ~0.3333
-	*/
-	mean: typeof mean;
-
 	/**
 	* Computes the arithmetic mean of a strided array using an improved Kahan–Babuška algorithm.
 	*

lib/node_modules/@stdlib/stats/base/lib/index.js

@@ -135,15 +135,6 @@ setReadOnly( ns, 'dvarm', require( '@stdlib/stats/base/dvarm' ) );
 */
 setReadOnly( ns, 'dvarmpn', require( '@stdlib/stats/base/dvarmpn' ) );
 
-/**
-* @name mean
-* @memberof ns
-* @readonly
-* @type {Function}
-* @see {@link module:@stdlib/stats/base/mean}
-*/
-setReadOnly( ns, 'mean', require( '@stdlib/stats/base/mean' ) );
-
 /**
 * @name meankbn
 * @memberof ns