Remove scripts for training

They were replaced by Python3 scripts (part of the tesstrain repository).

Signed-off-by: Stefan Weil <[email protected]>

Author: stweil

Makefile.am

@@ -795,10 +795,6 @@ training_CPPFLAGS += $(ICU_UC_CFLAGS) $(ICU_I18N_CFLAGS)
 training_CPPFLAGS += $(pango_CFLAGS)
 training_CPPFLAGS += $(cairo_CFLAGS)
 
-bin_SCRIPTS = src/training/language-specific.sh src/training/tesstrain.sh
-scripts_DATA = src/training/tesstrain_utils.sh
-scriptsdir = $(bindir)
-
 if DISABLED_LEGACY_ENGINE
 training_CPPFLAGS += -DDISABLED_LEGACY_ENGINE
 endif