[tinyxml2] Remove resources/.

These are test files and aren't really needed here.

[.github] codecov.yml: Remove "./extlib", which didn't work anyway:

warning - 2024-10-19 13:18:48,965 -- Some files were not found --- {"not_found_files": ["!./extlib"]}

.github/workflows/codecov.yml

@@ -27,5 +27,5 @@ jobs:
         if: ${{ !cancelled() }}
         uses: codecov/test-results-action@v1
         with:
-          files: ./junit.xml,!./extlib
+          files: ./junit.xml
           token: ${{ secrets.CODECOV_TOKEN }}

extlib/tinyxml2/resources/utf8test.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document>
-    <English name="name" value="value">The world has many languages</English>
-    <Russian name="название(имя)" value="ценность">Мир имеет много языков</Russian>
-    <Spanish name="el nombre" value="el valor">el mundo tiene muchos idiomas</Spanish>
-    <SimplifiedChinese name="名字" value="价值">世界有很多语言</SimplifiedChinese>
-    <Русский название="name" ценность="value">&lt;имеет&gt;</Русский>
-    <汉语 名字="name" 价值="value">世界有很多语言</汉语>
-    <Heavy>"M&#x0eB;t&#230;l!"</Heavy>
-    <ä>Umlaut Element</ä>
-</document>

extlib/tinyxml2/resources/utf8testverify.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document>
-    <English name="name" value="value">The world has many languages</English>
-    <Russian name="название(имя)" value="ценность">Мир имеет много языков</Russian>
-    <Spanish name="el nombre" value="el valor">el mundo tiene muchos idiomas</Spanish>
-    <SimplifiedChinese name="名字" value="价值">世界有很多语言</SimplifiedChinese>
-    <Русский название="name" ценность="value">&lt;имеет&gt;</Русский>
-    <汉语 名字="name" 价值="value">世界有很多语言</汉语>
-    <Heavy>"Mëtæl!"</Heavy>
-    <ä>Umlaut Element</ä>
-</document>