Removed continuous integration

Signed-off-by: Riccardo Finotello <riccardo.finotello@gmail.com>

.github/workflows/pdflatex.yml

@@ -1,18 +0,0 @@
-name: Build PDFLaTeX
-on: [push]
-jobs:
-  build_latex:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Set up Git repository
-        uses: actions/checkout@v2
-      - name: Compile LaTeX document
-        uses: xu-cheng/latex-action@v2
-        with:
-          root_file: thesis.tex
-      - name: Upload PDF file
-        uses: actions/upload-artifact@v2
-        with:
-            name: thesis
-            path: thesis.pdf
-