Remove upload_port from platformio.ini

TODO.txt

@@ -2,4 +2,6 @@ Support mapping framebuffer to actual display format (e.g. half-panel layouts)
 Add font renderer
 Add font support (via filesystem?)
 Check 8bpp vs. 1bpp configs for all display types. (e.g. BROSE flipdot is using 8bpp even though it should use 1bpp)
-Add buffer conversions for all combinations (needed e.g. in tpm2net receiver)
+Add buffer conversions for all combinations (needed e.g. in tpm2net receiver)
+Selection: Use home value from JSON config for split-flap home positions
+           Add text-align to units

platformio.ini

@@ -13,7 +13,6 @@ platform = espressif32@3.3.2
 board = esp-wrover-kit
 framework = espidf
 monitor_speed = 115200
-upload_port = COM3
 board_build.partitions = partition_table.csv
 board_build.embed_txtfiles = 
     src/static/favicon.ico