Get abstract functionality back up and working

Classes/PhDThesisPSnPDF.cls

@@ -1119,6 +1119,8 @@ wish to left align your text}
     \renewcommand{\listoftables}{}
     \renewcommand{\printnomencl}{}
     \renewcommand{\printnomencl}[1][2]{}
+    \renewcommand{\printnoidxglossaries}[1][]{}
+    \renewcommand{\printnoidxglossary}[1][]{}
     \renewcommand{\printthesisindex}{}
     \renewcommand{\bibname}{}
     \renewcommand{\bibliography}[1]{\thispagestyle{empty}}

abstract.tex

@@ -1,7 +1,4 @@
 % !TEX root = thesis.tex
-\documentclass[thesis]{subfiles}
-
-\begin{document}
 % ************************** Thesis Abstract *****************************
 % Use `abstract' as an option in the document class to print only the titlepage and the abstract.
 \begin{abstract}
@@ -12,6 +9,4 @@
 	We present two such structural priors for convolutional neural networks, and evaluate them in state-of-the-art image classification architectures. Both methods are found to improve the generalization of these architectures while also decreasing the size and increasing the efficiency of their training and test-time computation.
 
 	Finally, we begin to explore automatically finding structural priors in deep networks by presenting our work on adding conditional computation to deep networks. Although results show this is not optimal, the method shows promise in producing a better compute-generalization trade-off than naive approaches to reducing computation in deep networks, hopefully leading towards a better approach to automatically learning structural priors in deep networks.
-\end{abstract}
-
-\end{document}
+\end{abstract}

declaration.tex

@@ -1,8 +1,4 @@
 % !TEX root = thesis.tex
-\documentclass[thesis]{subfiles}
-
-\begin{document}
-
 % ******************************* Thesis Declaration ***************************
 
 \begin{declaration}
@@ -18,6 +14,4 @@
 
 % Author and date will be inserted automatically from thesis.tex \author \degreedate
 
-\end{declaration}
-
-\end{document}
+\end{declaration}

dedication.tex

@@ -1,7 +1,4 @@
 % !TEX root = thesis.tex
-\documentclass[thesis]{subfiles}
-
-\begin{document}
 % ******************************* Thesis Dedidcation ********************************
 
 \begin{dedication}
@@ -37,6 +34,4 @@
 Jackson Wo,
 Jenny Yang,
 and others.
-\end{dedication}
-
-\end{document}
+\end{dedication}

thesis.tex

@@ -96,6 +96,7 @@
 \ifdefineAbstract
  \pagestyle{empty}
  \includeonly{declaration, abstract}
+ \renewcommand{\subfile}[1]{}
 \fi
 
 % ***************************** Chapter Mode ***********************************
@@ -124,10 +125,10 @@
 
 \maketitle
 
-\subfile{dedication}
-\subfile{declaration}
-\subfile{acknowledgement}
-\subfile{abstract}
+\include{dedication}
+\include{declaration}
+\include{acknowledgement}
+\include{abstract}
 
 % *********************** Adding TOC and List of Figures ***********************