[ci] Remove unnecessary Linux libraries (#3975)

The Linux desktop template included some libraries as explicit dependencies unnecessarily, which were later removed from the template once we realized `snap` support didn't actually require them. This removes them from the Dockerfile, and from the CMakeLists.txt that still reference them.

Fixes flutter/flutter#78562

Author: stuartmorgan-g

.ci/Dockerfile

@@ -23,7 +23,7 @@ RUN apt-get install -y clang-format
 # - build tools.
 RUN apt-get install -y clang cmake ninja-build file pkg-config
 # - libraries.
-RUN apt-get install -y libgtk-3-dev libblkid-dev liblzma-dev libgcrypt20-dev
+RUN apt-get install -y libgtk-3-dev
 # - xvfb to allow running headless.
 RUN apt-get install -y xvfb libegl1-mesa
 

packages/path_provider/path_provider/example/linux/flutter/CMakeLists.txt

@@ -24,7 +24,6 @@ find_package(PkgConfig REQUIRED)
 pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
 pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
 pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
-pkg_check_modules(BLKID REQUIRED IMPORTED_TARGET blkid)
 
 set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
 
@@ -66,7 +65,6 @@ target_link_libraries(flutter INTERFACE
   PkgConfig::GTK
   PkgConfig::GLIB
   PkgConfig::GIO
-  PkgConfig::BLKID
 )
 add_dependencies(flutter flutter_assemble)
 

packages/path_provider/path_provider_linux/example/linux/flutter/CMakeLists.txt

@@ -24,7 +24,6 @@ find_package(PkgConfig REQUIRED)
 pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
 pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
 pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
-pkg_check_modules(BLKID REQUIRED IMPORTED_TARGET blkid)
 
 set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
 
@@ -66,7 +65,6 @@ target_link_libraries(flutter INTERFACE
   PkgConfig::GTK
   PkgConfig::GLIB
   PkgConfig::GIO
-  PkgConfig::BLKID
 )
 add_dependencies(flutter flutter_assemble)
 

packages/shared_preferences/shared_preferences/example/linux/flutter/CMakeLists.txt

@@ -24,7 +24,6 @@ find_package(PkgConfig REQUIRED)
 pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
 pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
 pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
-pkg_check_modules(BLKID REQUIRED IMPORTED_TARGET blkid)
 
 set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
 
@@ -66,7 +65,6 @@ target_link_libraries(flutter INTERFACE
   PkgConfig::GTK
   PkgConfig::GLIB
   PkgConfig::GIO
-  PkgConfig::BLKID
 )
 add_dependencies(flutter flutter_assemble)