Revert "np.logical_or, np.logical_and #381"

This reverts commit 5cadcd6.

Author: Nucs

src/NumSharp.Core/Logic/np.logical_and.cs

@@ -11,8 +11,7 @@
     <PackageProjectUrl>https://github.com/SciSharp</PackageProjectUrl>
     <Copyright>2020 © SciSharp STACK Team</Copyright>
     <RepositoryUrl>https://github.com/SciSharp/NumSharp</RepositoryUrl>
-    <PackageReleaseNotes>np.logical_or
-np.logical_and</PackageReleaseNotes>
+    <PackageReleaseNotes></PackageReleaseNotes>
     <AssemblyVersion>0.20.6</AssemblyVersion>
     <FileVersion>0.20.6</FileVersion>
     <RepositoryType>git</RepositoryType>