remove: remove mul from namespace

This commit removes `mul` from the namespace.

BREAKING CHANGE: remove `mul`

To migrate, users should access the same symbol in the `number/float64/base` namespace.

Ref: #2261

Author: gururaj1512

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

@@ -25,7 +25,6 @@ import cmulf = require( '@stdlib/complex/float32/base/mul' );
 import cadd = require( '@stdlib/complex/float64/base/add' );
 import cmul = require( '@stdlib/complex/float64/base/mul' );
 import csubf = require( '@stdlib/math/base/ops/csubf' );
-import mul = require( '@stdlib/number/float64/base/mul' );
 import sub = require( '@stdlib/number/float64/base/sub' );
 
 /**
@@ -228,35 +227,6 @@ interface Namespace {
 	*/
 	csubf: typeof csubf;
 
-	/**
-	* Multiplies two double-precision floating-point numbers `x` and `y`.
-	*
-	* @param x - first input value
-	* @param y - second input value
-	* @returns result
-	*
-	* @example
-	* var v = ns.mul( -1.0, 5.0 );
-	* // returns -5.0
-	*
-	* @example
-	* var v = ns.mul( 2.0, 5.0 );
-	* // returns 10.0
-	*
-	* @example
-	* var v = ns.mul( 0.0, 5.0 );
-	* // returns 0.0
-	*
-	* @example
-	* var v = ns.mul( -0.0, 0.0 );
-	* // returns -0.0
-	*
-	* @example
-	* var v = ns.mul( NaN, NaN );
-	* // returns NaN
-	*/
-	mul: typeof mul;
-
 	/**
 	* Subtracts two double-precision floating-point numbers `x` and `y`.
 	*

lib/node_modules/@stdlib/math/base/ops/lib/index.js

@@ -81,15 +81,6 @@ setReadOnly( ns, 'cmul', require( '@stdlib/complex/float64/base/mul' ) );
 */
 setReadOnly( ns, 'csubf', require( '@stdlib/math/base/ops/csubf' ) );
 
-/**
-* @name mul
-* @memberof ns
-* @readonly
-* @type {Function}
-* @see {@link module:@stdlib/number/float64/base/mul}
-*/
-setReadOnly( ns, 'mul', require( '@stdlib/number/float64/base/mul' ) );
-
 /**
 * @name sub
 * @memberof ns