docs: update example

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/blas/base/wasm/scasum/README.md

@@ -103,10 +103,6 @@ var x = new Complex64Array( [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ] );
 
 var sum = scasum.ndarray( 2, x, 1, x.length-2 );
 // returns 8.0
-
-// Using a negative stride to sum from the last element:
-sum = scasum.ndarray( 4, x, -1, x.length-1 );
-// returns 19.0
 ```
 
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