m68k-palmos: do not try to write section attributes, they're not really useful, and lead to assembler warnings

compiler/aggas.pas

@@ -513,6 +513,7 @@ implementation
          system_m68k_atari, { atari tos/mint GNU AS also doesn't seem to like .section (KB) }
          system_m68k_amiga, { amiga has old GNU AS (2.14), which blews up from .section (KB) }
          system_m68k_sinclairql, { same story, only ancient GNU tools available (KB) }
+         system_m68k_palmos, { see above... (KB) }
          system_m68k_human68k: { see above... (KB) }
            begin
              { ... but vasm is GAS compatible on amiga/atari, and supports named sections }