Deprecation of %estimate magic command

src/Jupyter/Magic/EstimateMagic.cs

@@ -31,14 +31,16 @@ public EstimateMagic(ISymbolResolver resolver, ILogger<EstimateMagic> logger) :
             {
                 Summary = "Runs a given function or operation on the ResourcesEstimator target machine.",
                 Description = @"
+                    > [!NOTE]
+                    > The `%estimate` magic command and the QDK ResourcesEstimator have been deprecated.
+
                     The ResourcesEstimator estimates statistics about how many resources the given
                     operation needs for execution. The resources it calculates include:
 
                     - Counts for each primitive operation
                     - Depth (lower bound for the T-gate depth of the quantum circuit)
                     - Width (lower bound for the maximum number of qubits used for the computation)
 
-                    See the [ResourcesEstimator user guide](https://docs.microsoft.com/azure/quantum/user-guide/machines/resources-estimator) to learn more.
 
                     #### Required parameters
 

src/Jupyter/Magic/WhoMagic.cs

@@ -25,8 +25,7 @@ public WhoMagic(ISnippets snippets, ILogger<WhoMagic> logger) : base(
                 Summary = "Lists the Q# operations available in the current session.",
                 Description = @"
                     This magic command returns a list of Q# operations and functions that are available
-                    in the current IQ# session for use with magic commands such as `%simulate`
-                    and `%estimate`.
+                    in the current IQ# session for use with magic commands such as `%simulate`.
 
                     The list will include Q# operations and functions which have been defined interactively
                     within cells in the current notebook (after the cells have been executed),