trace: remove some unused trace_dump_tag*() functions
trace: remove some unused trace_dump_tag*() functions

Fixes the following Clang warnings.

tr_dump.c:137:1: warning: unused function 'trace_dump_tag' [-Wunused-function]
trace_dump_tag(const char *name)
^
tr_dump.c:168:1: warning: unused function 'trace_dump_tag_begin2' [-Wunused-function]
trace_dump_tag_begin2(const char *name,
^
tr_dump.c:187:1: warning: unused function 'trace_dump_tag_begin3' [-Wunused-function]
trace_dump_tag_begin3(const char *name,
^
  CC       tr_texture.lo
3 warnings generated.

Signed-off-by: Samuel Pitoiset <506e97eed81d9e59d22f4c73fb51123bb62b4a30@gmail.com>
Reviewed-by: Brian Paul <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@vmware.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler