remove reference to readme in nuget task

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

scripts/mk_nuget_task.py

@@ -86,9 +86,6 @@ def mk_icon(source_root):
     mk_dir("out/content")
     shutil.copy(f"{source_root}/resources/icon.jpg", "out/content/icon.jpg")
 
-def mk_readme(source_root):
-    mk_dir("out/content")
-    shutil.copy(f"{source_root}/README.md", "out/content/README.md")
 
 
 def create_nuget_spec(version, repo, branch, commit, symbols, arch):
@@ -108,7 +105,6 @@ def create_nuget_spec(version, repo, branch, commit, symbols, arch):
         <copyright>&#169; Microsoft Corporation. All rights reserved.</copyright>
         <tags>smt constraint solver theorem prover</tags>
         <icon>content/icon.jpg</icon>
-        <readme>content/README.md</readme>
         <projectUrl>https://github.com/Z3Prover/z3</projectUrl>
         <license type="expression">MIT</license>
         <repository type="git" url="{1}" branch="{2}" commit="{3}" />
@@ -145,7 +141,6 @@ def create(self):
         mk_dir(self.packages)
         unpack(self.packages, self.symbols, self.arch)
         mk_targets(self.source_root)
-        mk_readme(self.source_root)
         mk_icon(self.source_root)
         create_nuget_spec(self.version, self.repo, self.branch, self.commit, self.symbols, self.arch)