fix: remove redundant code

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
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    status: passed
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    status: passed
---

Author: aayush0325

lib/node_modules/@stdlib/lapack/base/dgttrf/lib/base.js

@@ -77,21 +77,19 @@ function dgttrf( N, DL, strideDL, offsetDL, D, strideD, offsetD, DU, strideDU, o
 	}
 
 	idl = offsetDL;
+	id = offsetD;
+	idu = offsetDU;
 	idu2 = offsetDU2;
-
 	ip = offsetIPIV;
+
 	for ( i = 0; i < N; i++ ) {
 		IPIV[ ip + (strideIPIV*i) ] = i;
 	}
 
-	idu = offsetDU;
 	for ( i = 0; i < N-2; i++ ) {
 		DU2[ idu + (strideDU*i) ] = 0;
 	}
 
-	idl = offsetDL;
-	idu2 = offsetDU2;
-	id = offsetD;
 	for ( i = 0; i < N-2; i++ ) {
 		if ( abs( D[ id + (strideD*i) ] ) >= abs( DL[ idl + (strideDL*i) ] ) ) { // no row interchange required
 			if ( D[ id ] !== 0.0 ) {