Remove LGTM badges - they are dead, also update codeQL to use v2 actions

Author: luben

.github/workflows/codeql-analysis.yml

@@ -37,7 +37,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -49,4 +49,4 @@ jobs:
       run: ./sbt compile
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

README.md

@@ -3,9 +3,6 @@ Zstd-jni
 
 [![CI](https://github.com/luben/zstd-jni/workflows/CI/badge.svg)](https://github.com/luben/zstd-jni/actions)
 [![codecov.io](http://codecov.io/github/luben/zstd-jni/coverage.svg?branch=master)](http://codecov.io/github/luben/zstd-jni?branch=master)
-[![Code Quality: C](https://img.shields.io/lgtm/grade/cpp/g/luben/zstd-jni.svg?logo=lgtm&logoWidth=18&label=C)](https://lgtm.com/projects/g/luben/zstd-jni/context:cpp)
-[![Code Quality: Java](https://img.shields.io/lgtm/grade/java/g/luben/zstd-jni.svg?logo=lgtm&logoWidth=18&label=Java)](https://lgtm.com/projects/g/luben/zstd-jni/context:java)
-[![Total Alerts](https://img.shields.io/lgtm/alerts/g/luben/zstd-jni.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/luben/zstd-jni/alerts)
 [![Maven Central](https://img.shields.io/maven-central/v/com.github.luben/zstd-jni.svg?label=Maven%20Central)](https://search.maven.org/artifact/com.github.luben/zstd-jni/)
 [![Javadocs](https://www.javadoc.io/badge/com.github.luben/zstd-jni.svg)](https://www.javadoc.io/doc/com.github.luben/zstd-jni)