Fix #751: Remove keybinding for PowerShellFindModule command

This command's keybinding conflicts with VS Code's default key binding
for the Format Selection command.  The PowerShellFindModule command
isn't commonly used so we are just removing the binding instead of
finding a different one.

Author: daviwil

package.json

@@ -71,11 +71,6 @@
         "command": "PowerShell.OpenInISE",
         "key": "ctrl+shift+i",
         "when": "editorTextFocus && editorLangId == 'powershell'"
-      },
-      {
-        "command": "PowerShell.PowerShellFindModule",
-        "key": "ctrl+K ctrl+f",
-        "when": "editorTextFocus && editorLangId == 'powershell'"
       }
     ],
     "commands": [