README.md: Lose LGTM badge because we don't use it (TheAlgorithms#7063)

* README.md: Lose LGTM badge because we don't use it

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Author: cclauss

DIRECTORY.md

@@ -14,6 +14,7 @@
 
 ## Audio Filters
   * [Butterworth Filter](audio_filters/butterworth_filter.py)
+  * [Equal Loudness Filter](audio_filters/equal_loudness_filter.py)
   * [Iir Filter](audio_filters/iir_filter.py)
   * [Show Response](audio_filters/show_response.py)
 
@@ -475,6 +476,7 @@
   * [Binomial Coefficient](maths/binomial_coefficient.py)
   * [Binomial Distribution](maths/binomial_distribution.py)
   * [Bisection](maths/bisection.py)
+  * [Carmichael Number](maths/carmichael_number.py)
   * [Catalan Number](maths/catalan_number.py)
   * [Ceil](maths/ceil.py)
   * [Check Polygon](maths/check_polygon.py)

README.md

@@ -24,9 +24,6 @@
   <a href="https://github.com/TheAlgorithms/Python/actions">
     <img src="https://img.shields.io/github/workflow/status/TheAlgorithms/Python/build?label=CI&logo=github&style=flat-square" height="20" alt="GitHub Workflow Status">
   </a>
-  <a href="https://lgtm.com/projects/g/TheAlgorithms/Python/alerts">
-    <img src="https://img.shields.io/lgtm/alerts/github/TheAlgorithms/Python.svg?label=LGTM&logo=LGTM&style=flat-square" height="20" alt="LGTM">
-  </a>
   <a href="https://github.com/pre-commit/pre-commit">
     <img src="https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white&style=flat-square" height="20" alt="pre-commit">
   </a>