103 remove pdf file references (#104)

* Update README.md

Removed reference to PDF files.

* Update index.html

Deleted mention of tips in PDF files.

Author: delphidabbler

README.md

@@ -37,4 +37,4 @@ There are two open document format files in this directory.
 * One contains a large number of tips downloaded from the former _Delphi Pool_ website.
 * The second contains tips collected online by _"topellina"_.
 
-There may be some duplication of tips between the PDF files. Further, some tips that appear in the `docs/_tips` directory may have been sourced, and later deleted, from these files.
+Some tips that appear in the `docs/_tips` directory may have been sourced, and sometimes deleted, from these files.

docs/index.html

@@ -24,7 +24,7 @@
 
 <p><strong>Be warned</strong> that these tips are now quite old, few have ever been tested and those that have were tested on an old version of Delphi.</p>
 
-<p>These tips are also available in PDF format and as a SQL database from the <a href="https://github.com/delphidabbler/delphi-tips">Delphi Tips GitHub Repository</a>. Additional tips will also be found there in the <code>extra</code> folder of that repository.</p>
+<p>These tips are also available as a SQL database from the <a href="https://github.com/delphidabbler/delphi-tips">Delphi Tips GitHub Repository</a>. Additional tips will also be found there in the <code>extra</code> folder of that repository.</p>
 
 <p>Any bugs in this site can be reported on the project's <a href="https://github.com/delphidabbler/delphi-tips/issues">issues page</a>. <small>(GitHub account required).</small></p>