hw: remove unused function

system/hardware/base.h

@@ -34,8 +34,6 @@ public:
   static bool get_ssh_enabled() { return false; }
   static void set_ssh_enabled(bool enabled) {}
 
-  static void config_cpu_rendering(bool offscreen);
-
   static bool PC() { return false; }
   static bool TICI() { return false; }
   static bool AGNOS() { return false; }

system/hardware/pc/hardware.h

@@ -12,12 +12,4 @@ public:
   static bool PC() { return true; }
   static bool TICI() { return util::getenv("TICI", 0) == 1; }
   static bool AGNOS() { return util::getenv("TICI", 0) == 1; }
-
-  static void config_cpu_rendering(bool offscreen) {
-    if (offscreen) {
-      setenv("QT_QPA_PLATFORM", "offscreen", 1);
-    }
-    setenv("__GLX_VENDOR_LIBRARY_NAME", "mesa", 1);
-    setenv("LP_NUM_THREADS", "0", 1); // disable threading so we stay on our assigned CPU
-  }
 };

system/hardware/tici/hardware.h

@@ -109,11 +109,4 @@ public:
 
   static bool get_ssh_enabled() { return Params().getBool("SshEnabled"); }
   static void set_ssh_enabled(bool enabled) { Params().putBool("SshEnabled", enabled); }
-
-  static void config_cpu_rendering(bool offscreen) {
-    if (offscreen) {
-      setenv("QT_QPA_PLATFORM", "eglfs", 1); // offscreen doesn't work with EGL/GLES
-    }
-    setenv("LP_NUM_THREADS", "0", 1); // disable threading so we stay on our assigned CPU
-  }
 };