Warnings from pdfbox are not suppressed

[HiromuHota]

Describe the bug

Warning messages from pdfbox are printed on the console even when verbose options (-v or -vv) are not given.

To Reproduce
Steps to reproduce the behavior:

1. Run pdftotree tests/input/112823.pdf

Expected behavior

When running pdftotree without -v or -vv options, warning messages should be suppressed.

Error Logs/Screenshots

$ pdftotree tests/input/112823.pdf > /dev/null
Got stderr: Oct 26, 2020 1:48:33 PM org.apache.pdfbox.pdmodel.font.PDFont loadUnicodeCmap
WARNING: Invalid ToUnicode CMap in font YWBRVJ+PSOgrkdutchbs
Oct 26, 2020 1:48:33 PM org.apache.pdfbox.pdmodel.font.PDFont loadUnicodeCmap
WARNING: Invalid ToUnicode CMap in font RHAVJM+PSOsymclas

Got stderr: Oct 26, 2020 1:48:34 PM org.apache.pdfbox.pdmodel.font.PDFont loadUnicodeCmap
WARNING: Invalid ToUnicode CMap in font YWBRVJ+PSOgrkdutchbs
Oct 26, 2020 1:48:34 PM org.apache.pdfbox.pdmodel.font.PDFont loadUnicodeCmap
WARNING: Invalid ToUnicode CMap in font RHAVJM+PSOsymclas

Got stderr: Oct 26, 2020 1:48:35 PM org.apache.pdfbox.pdmodel.font.PDFont loadUnicodeCmap
WARNING: Invalid ToUnicode CMap in font YWBRVJ+PSOgrkdutchbs
Oct 26, 2020 1:48:35 PM org.apache.pdfbox.pdmodel.font.PDFont loadUnicodeCmap
WARNING: Invalid ToUnicode CMap in font RHAVJM+PSOsymclas

Got stderr: Oct 26, 2020 1:48:36 PM org.apache.pdfbox.pdmodel.font.PDFont loadUnicodeCmap
WARNING: Invalid ToUnicode CMap in font YWBRVJ+PSOgrkdutchbs

Got stderr: Oct 26, 2020 1:48:37 PM org.apache.pdfbox.pdmodel.font.PDSimpleFont toUnicode
WARNING: No Unicode mapping for figure (34) in font BXHKZY+PSOwsthelvnps

Got stderr: Oct 26, 2020 1:48:38 PM org.apache.pdfbox.pdmodel.font.PDFont loadUnicodeCmap
WARNING: Invalid ToUnicode CMap in font YWBRVJ+PSOgrkdutchbs
Oct 26, 2020 1:48:38 PM org.apache.pdfbox.pdmodel.font.PDSimpleFont toUnicode
WARNING: No Unicode mapping for figure (34) in font BXHKZY+PSOwsthelvnps

Environment (please complete the following information):

• OS: macOS 10.15.6
• pdftotree Version: v0.5.0
• pdfminer.six Version: N/A

Additional context
Add any other context about the problem here.

This can be controlled by tabula's build_options:
https://tabula-py.readthedocs.io/en/latest/tabula.html#tabula.io.build_options