mpegts,tag: Remove unused gobject and gstreamer base dependencies

Silences these warnings:

    warning: unused import: `gstreamer_base_sys as gst_base`
      --> gstreamer-tag/sys/src/lib.rs:15:5
       |
    15 | use gstreamer_base_sys as gst_base;
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       |
       = note: `#[warn(unused_imports)]` on by default

    warning: unused import: `gobject_sys as gobject`
      --> gstreamer-mpegts/sys/src/lib.rs:14:5
       |
    14 | use gobject_sys as gobject;
       |     ^^^^^^^^^^^^^^^^^^^^^^
       |
       = note: `#[warn(unused_imports)]` on by default

gstreamer-mpegts/sys/Cargo.toml

@@ -7,9 +7,6 @@ libc = "0.2"
 [dependencies.glib-sys]
 git = "https://github.com/gtk-rs/gtk-rs"
 
-[dependencies.gobject-sys]
-git = "https://github.com/gtk-rs/gtk-rs"
-
 [dependencies.gstreamer-base-sys]
 path = "../../gstreamer-base/sys"
 

gstreamer-mpegts/sys/Gir.toml

@@ -20,7 +20,6 @@ extra_versions = [
 
 external_libraries = [
     "GLib",
-    "GObject",
 ]
 
 [external_libraries]

gstreamer-mpegts/sys/src/lib.rs

@@ -11,7 +11,6 @@
 #![cfg_attr(all(not(doctest), doc), feature(doc_cfg))]
 
 use glib_sys as glib;
-use gobject_sys as gobject;
 use gstreamer_sys as gst;
 
 #[allow(unused_imports)]

gstreamer-tag/sys/Cargo.toml

@@ -10,9 +10,6 @@ git = "https://github.com/gtk-rs/gtk-rs"
 [dependencies.gobject-sys]
 git = "https://github.com/gtk-rs/gtk-rs"
 
-[dependencies.gstreamer-base-sys]
-path = "../../gstreamer-base/sys"
-
 [dependencies.gstreamer-sys]
 path = "../../gstreamer/sys"
 

gstreamer-tag/sys/Gir.toml

@@ -25,4 +25,3 @@ external_libraries = [
 
 [external_libraries]
 gstreamer="Gst"
-gstreamer_base="GstBase"

gstreamer-tag/sys/src/lib.rs

@@ -12,7 +12,6 @@
 
 use glib_sys as glib;
 use gobject_sys as gobject;
-use gstreamer_base_sys as gst_base;
 use gstreamer_sys as gst;
 
 #[allow(unused_imports)]