Remove auto-generated test files and update .gitignore to ignore them

Author: jimmysoda

.gitignore

@@ -1,7 +1,7 @@
 # Ignore files generated by CMake from a file template
 tests/pdal-stats.las
 tests/data/*.json
-tests/pdal/capi/*Test.c
+tests/pdal/test_pdalc_*.c
 
 # Ignore doxygen docs
 /doc/doxygen

CMakeLists.txt

@@ -36,7 +36,7 @@ if(CMAKE_COMPILER_IS_GNUCXX)
 		set(COVERAGE_EXCLUDES
 			'build/*'
 			'cmake/*'
-			'tests/*'
+			'tests/pdal/*'
 			'/usr/include/*'
 		)
 	endif()