Figure.grdimage: Remove deprecated parameter 'bit_color', use 'bitcolor' instead (deprecated since v0.8.0) (#3036)

Author: michaelgrund

doc/changes.md

@@ -139,7 +139,7 @@
 ### Deprecations
 
 * Remove the unused pygmt.test() function ([#2652](https://github.com/GenericMappingTools/pygmt/pull/2652))
-* Figure.image: Deprecate parameter "bit_color" to "bitcolor" (remove in v0.12.0) ([#2635](https://github.com/GenericMappingTools/pygmt/pull/2635))
+* Figure.grdimage: Deprecate parameter "bit_color" to "bitcolor" (remove in v0.12.0) ([#2635](https://github.com/GenericMappingTools/pygmt/pull/2635))
 * Figure.text: Remove the deprecated "incols" parameter (deprecated since v0.8.0) ([#2473](https://github.com/GenericMappingTools/pygmt/pull/2473))
 * NEP29: Set minimum required version to Python 3.9+ ([#2487](https://github.com/GenericMappingTools/pygmt/pull/2487))
 * NEP29: Set minimum required version to NumPy 1.22+ ([#2586](https://github.com/GenericMappingTools/pygmt/pull/2586))

pygmt/src/grdimage.py

@@ -5,7 +5,6 @@
 from pygmt.exceptions import GMTInvalidInput
 from pygmt.helpers import (
     build_arg_string,
-    deprecate_parameter,
     fmt_docstring,
     kwargs_to_strings,
     use_alias,
@@ -15,7 +14,6 @@
 
 
 @fmt_docstring
-@deprecate_parameter("bit_color", "bitcolor", "v0.10.0", remove_version="v0.12.0")
 @use_alias(
     B="frame",
     C="cmap",