Remove schedule from last report
Fixed some details in bibliography
Remove references to schedule
Remove packages and clean tcc.tex

Most of these packages were added during the initial phase of this
report, aided by my inexperience with LaTeX. Right now, most of them
aren't useful and were removed.

The packages are:
- graphicx -> It allows some key-value parameters in \includegraphics
  commands. As the original bias-variance figure was too large to fit in
  the report, it was scaled using scale=0.67, but I simply created a
  smaller copy of it.
- cite -> It was used to improve \cite{} with numerical output, but ABNT
  recommend named citations (e.g. CARLOS, 2014), thus making it useless.
- url -> Not sure why I added it, but the package hyperref does
  everything I need.

I also added the package `fontenc` to be able to use T1 font encodings,
which, from my research on tex.stackexchange.com, makes diacritic
characters directly available to the compiler instead of making them
with a combination of characters and accents. Thus, kerning, line breaks
and the document as a whole (it's in pt-BR!) are improved.