Nvidia conda channel is no longer necessary

Author: manopapad

README.md

@@ -43,13 +43,13 @@ Please make sure you have at least conda version 24.1 installed, then create
 a new environment containing cuNumeric:
 
 ```
-conda create -n myenv -c nvidia -c conda-forge -c legate cunumeric
+conda create -n myenv -c conda-forge -c legate cunumeric
 ```
 
 or install it into an existing environment:
 
 ```
-conda install -c nvidia -c conda-forge -c legate cunumeric
+conda install -c conda-forge -c legate cunumeric
 ```
 
 Once installed, you can verify the installation by running one of the examples
@@ -67,7 +67,7 @@ The default package contains GPU support, and is compatible with CUDA >= 11.8
 (driver >= 520), and Volta or later GPU architectures. There are also CPU-only
 packages available, which will be automatically selected when installing on a
 machine without GPUs available. See https://nv-legate.github.io/cunumeric for
-details about manually forcing different install configurations, or building 
+details about manually forcing different install configurations, or building
 cuNumeric from source.
 
 ## Usage and Execution