The TOC is having the first entry as "Contents", that I like to remove. I searched for the solutions( That are quite old, and does not work anymore) that says either to use \tableofcontents* or use an environment
\begin{KeepFromToc}
\tableofcontents
\end{KeepFromToc}
Which is not recognized by my class file ( non memoir class) The MWC is given below
\documentclass[a4paper,11pt,oneside,chapterprefix=TRUE]{scrbook}
\usepackage[utf8]{inputenc}
\usepackage{scrlayer-scrpage}
\usepackage[pass,a4paper]{geometry}
\usepackage{acronym}
\usepackage[notindex]{tocbibind}
\usepackage{titletoc}
\usepackage{makeidx}
\makeindex
\begin{document}
\frontmatter
\setcounter{page}{1}
\tableofcontents
\listoftables
\listoffigures
%\KOMAoptions{open=right}
\include{acronyms}
\include{ACK}
\include{Publications Related to Thesis}
\mainmatter
\chapter{Introduction}
\backmatter
\printbibliography
\end{document}
Well after so many solutions finally \usepackage[nottoc]{tocbibind} solved the problem.