gnuradio: Remove fetchSubmodules argument

No GR package needs this argument now, and in case someone wishes to use
a bundled version of Volk for example they may do so via `overrideSrc`
argument.

pkgs/applications/radio/gnuradio/3.7.nix

@@ -44,8 +44,6 @@
   minor = "14";
   patch = "0";
 }
-# We use our build of volk and not the one bundled with the release
-, fetchSubmodules ? false
 }:
 
 let
@@ -213,7 +211,6 @@ let
       sourceSha256
       overrideSrc
       fetchFromGitHub
-      fetchSubmodules
     ;
     qt = qt4;
     gtk = gtk2;

pkgs/applications/radio/gnuradio/3.8.nix

@@ -44,8 +44,6 @@
   minor = "4";
   patch = "0";
 }
-# We use our build of volk and not the one bundled with the release
-, fetchSubmodules ? false
 }:
 
 let
@@ -208,7 +206,6 @@ let
       sourceSha256
       overrideSrc
       fetchFromGitHub
-      fetchSubmodules
     ;
     qt = qt5;
     gtk = gtk3;

pkgs/applications/radio/gnuradio/default.nix

@@ -48,7 +48,6 @@
   minor = "3";
   patch = "0";
 }
-, fetchSubmodules ? false
 }:
 
 let
@@ -231,7 +230,6 @@ let
       sourceSha256
       overrideSrc
       fetchFromGitHub
-      fetchSubmodules
     ;
     qt = qt5;
     gtk = gtk3;

pkgs/applications/radio/gnuradio/shared.nix

@@ -11,7 +11,6 @@
 # the main expressions
 , overrideSrc
 , fetchFromGitHub
-, fetchSubmodules
 }:
 
 rec {
@@ -26,7 +25,6 @@ rec {
       owner = "gnuradio";
       rev = "v${version}";
       sha256 = sourceSha256;
-      inherit fetchSubmodules;
     }
   ;
   # Check if a feature is enabled, while defaulting to true if feat is not