refactor(tiny_fft): refactor tiny_ttf cache with updated improvements (#6441)

Co-authored-by: Benign X <1341398182@qq.com>
Co-authored-by: Visa Harvey <visa.harvey@semel.fi>

src/lv_init.c

@@ -316,10 +316,6 @@ void lv_init(void)
     lv_freetype_init(LV_FREETYPE_CACHE_FT_GLYPH_CNT);
 #endif
 
-#if LV_USE_TINY_TTF
-    lv_tiny_ttf_init();
-#endif
-
     lv_initialized = true;
 
     LV_LOG_TRACE("finished");
@@ -357,10 +353,6 @@ void lv_deinit(void)
     lv_freetype_uninit();
 #endif
 
-#if LV_USE_TINY_TTF
-    lv_tiny_ttf_deinit();
-#endif
-
 #if LV_USE_THEME_DEFAULT
     lv_theme_default_deinit();
 #endif