Fix requirements.

Author: Shyue Ping Ong

requirements.txt

@@ -1,20 +0,0 @@
-numpy==1.24.3
-sympy==1.11.1
-requests==2.29.0
-monty==2022.9.9
-ruamel.yaml==0.17.32
-scipy==1.9.0
-tabulate==0.9.0
-matplotlib==3.5.2
-palettable==3.3.0
-spglib==2.0.2
-pandas==2.0.3
-networkx==2.8.8
-plotly==5.11.0
-beautifulsoup4==4.12.2
-uncertainties==3.1.7
-Cython==3.0.0
-pybtex==0.24.0
-mp-api==0.33.3
-tqdm==4.65.0
-joblib==1.3.1