dependencies: simplify logging methods

A bunch of SystemDependency subclasses overrode log_tried() even though
they used the same function anyway. Delete them -- they still print
the same thing either way.

mesonbuild/dependencies/dev.py

@@ -115,9 +115,6 @@ class GTestDependencySystem(SystemDependency):
         else:
             return 'building self'
 
-    def log_tried(self) -> str:
-        return 'system'
-
 
 class GTestDependencyPC(PkgConfigDependency):
 
@@ -186,9 +183,6 @@ class GMockDependencySystem(SystemDependency):
         else:
             return 'building self'
 
-    def log_tried(self) -> str:
-        return 'system'
-
 
 class GMockDependencyPC(PkgConfigDependency):
 

mesonbuild/dependencies/misc.py

@@ -393,9 +393,6 @@ class ShadercDependency(SystemDependency):
 
                 break
 
-    def log_tried(self) -> str:
-        return 'system'
-
 
 class CursesConfigToolDependency(ConfigToolDependency):
 

mesonbuild/dependencies/ui.py

@@ -50,9 +50,6 @@ class GLDependencySystem(SystemDependency):
             # FIXME: Detect version using self.clib_compiler
             return
 
-    def log_tried(self) -> str:
-        return 'system'
-
 class GnuStepDependency(ConfigToolDependency):
 
     tools = ['gnustep-config']
@@ -237,9 +234,6 @@ class VulkanDependencySystem(SystemDependency):
                     self.link_args.append(lib)
                 return
 
-    def log_tried(self) -> str:
-        return 'system'
-
 gl_factory = DependencyFactory(
     'gl',
     [DependencyMethods.PKGCONFIG, DependencyMethods.SYSTEM],